1 00:00:01,520 --> 00:00:05,880 [DRAMATIC MUSIC] 2 00:00:55,440 --> 00:00:58,040 NARRATOR: In the first months of 1945, 3 00:00:58,160 --> 00:00:59,960 Japan was on the run. 4 00:01:01,160 --> 00:01:02,920 [EXPLOSIONS RUMBLE] 5 00:01:03,920 --> 00:01:06,880 The Americans had fought their way across the Pacific. 6 00:01:07,000 --> 00:01:09,880 US submarines and aircraft had destroyed 7 00:01:10,000 --> 00:01:12,640 Japan's merchant fleet and naval airpower. 8 00:01:19,000 --> 00:01:21,680 The main Japanese home islands had been cut off 9 00:01:21,800 --> 00:01:24,560 from vital supplies of fuel and raw materials. 10 00:01:28,080 --> 00:01:30,720 The Japanese were facing defeat. 11 00:01:30,840 --> 00:01:32,600 [GUNFIRE] 12 00:01:32,720 --> 00:01:34,840 Yet they refused to surrender, 13 00:01:34,960 --> 00:01:38,400 convinced that if they fought back with sufficient brutality 14 00:01:38,520 --> 00:01:40,960 the Americans wouldn't have the stomach for the fight, 15 00:01:41,080 --> 00:01:42,640 and would give in. 16 00:01:47,480 --> 00:01:51,000 Japan made clear that every move towards the home islands 17 00:01:51,120 --> 00:01:53,800 would be paid for in Allied blood. 18 00:01:56,080 --> 00:01:59,200 It presented the United States with a huge problem. 19 00:01:59,320 --> 00:02:01,240 How could Japan be defeated 20 00:02:01,360 --> 00:02:04,040 without a terrible loss of American life? 21 00:02:10,920 --> 00:02:13,560 The country would eventually turn to the most powerful 22 00:02:13,680 --> 00:02:16,200 and dreadful weapon ever seen. 23 00:02:20,160 --> 00:02:23,680 A weapon that would change the course of war for ever. 24 00:02:37,920 --> 00:02:41,520 In early 1945, as US military planners 25 00:02:41,640 --> 00:02:43,920 considered the next move against Japan, 26 00:02:44,040 --> 00:02:47,840 their gaze fell on the Japanese occupied island of Iwo Jima. 27 00:02:50,680 --> 00:02:54,080 It lay a mere 800 miles from the Japanese mainland 28 00:02:54,200 --> 00:02:57,400 and would be a valuable base for attacking the country. 29 00:02:59,800 --> 00:03:03,120 The US commander in the central Pacific, Admiral Chester Nimitz, 30 00:03:03,240 --> 00:03:05,520 assembled the largest landing fleet 31 00:03:05,640 --> 00:03:08,120 ever brought together in the Pacific campaign 32 00:03:08,240 --> 00:03:11,560 and prepared to invade the island. 33 00:03:16,080 --> 00:03:18,480 Nimitz was taking no risks. 34 00:03:20,640 --> 00:03:23,920 Wave after wave of American aircraft 35 00:03:24,040 --> 00:03:27,040 paved the way with a massive aerial bombardment. 36 00:03:27,160 --> 00:03:31,640 [EXPLOSIONS RUMBLING] 37 00:03:40,200 --> 00:03:43,680 Then, on the morning of February 19th, 1945, 38 00:03:43,800 --> 00:03:45,960 the guns of the naval task force 39 00:03:46,080 --> 00:03:50,120 began one of the most prolonged bombardments of the war. 40 00:04:01,200 --> 00:04:03,920 At the same time, landing craft set off for the shore. 41 00:04:18,680 --> 00:04:21,320 The Marines hit the beaches of Iwo Jima 42 00:04:21,440 --> 00:04:25,360 along the south-western shore just after nine o'clock in the morning. 43 00:04:28,200 --> 00:04:31,160 For a few moments, there was an eerie calm, 44 00:04:31,280 --> 00:04:33,760 the massive naval and aerial bombardment 45 00:04:33,880 --> 00:04:36,560 appeared to have overwhelmed the Japanese garrison. 46 00:04:37,720 --> 00:04:42,080 Then a hurricane of Japanese fire swept over them. 47 00:04:55,160 --> 00:04:57,760 General Tadamichi Kuribayashi, 48 00:04:57,880 --> 00:04:59,720 the Japanese commander on the island, 49 00:04:59,840 --> 00:05:01,840 had told his men to hold their fire 50 00:05:01,960 --> 00:05:04,600 until the Americans were right under their guns. 51 00:05:09,680 --> 00:05:13,080 Now, the Japanese opened up from a network of tunnels, 52 00:05:13,200 --> 00:05:14,920 caves and bunkers. 53 00:05:20,640 --> 00:05:22,400 There was carnage. 54 00:05:29,920 --> 00:05:34,920 But gradually small groups of US troops inched their way forward. 55 00:05:47,160 --> 00:05:53,800 Finally, by the evening, the beach-head had been secured. 56 00:05:53,920 --> 00:05:57,840 The task now was to capture the 550-foot high 57 00:05:57,960 --> 00:06:01,120 Mount Suribachi, the heavily-defended volcano 58 00:06:01,240 --> 00:06:03,480 that dominates Iwo Jima. 59 00:06:12,920 --> 00:06:15,720 For three days, Marines clawed their way up 60 00:06:15,840 --> 00:06:17,880 the steep, pitted slopes. 61 00:06:18,000 --> 00:06:20,400 [GUNFIRE] 62 00:06:22,200 --> 00:06:25,320 They were supported by a constant air and naval bombardment 63 00:06:25,440 --> 00:06:27,920 from the invasion fleet. 64 00:06:42,600 --> 00:06:46,360 Finally, on February 23rd, 1945, 65 00:06:46,480 --> 00:06:50,080 a US platoon led by 1st Lieutenant Harold Schreier 66 00:06:50,200 --> 00:06:52,080 began the final assault, 67 00:06:52,200 --> 00:06:54,680 carrying with them a small US flag. 68 00:06:58,480 --> 00:07:01,520 They reached the summit and raised their flag 69 00:07:01,640 --> 00:07:04,040 using a piece of piping as a pole. 70 00:07:09,440 --> 00:07:12,760 Marine Corps photographer Staff Sergeant Louis Lowery 71 00:07:12,880 --> 00:07:15,840 captured the scene with a few precious photographs. 72 00:07:24,320 --> 00:07:26,840 The hard pressed Marines on the beaches below 73 00:07:26,960 --> 00:07:28,640 cheered and wept. 74 00:07:32,560 --> 00:07:34,800 Ships sounded their whistles. 75 00:07:34,920 --> 00:07:38,840 [SHIP WHISTLES HOOTING] 76 00:07:41,400 --> 00:07:46,400 Three hours later, the event was restaged with a larger US flag. 77 00:07:48,240 --> 00:07:51,400 The moment was immortalized by photographer Joe Rosenthal 78 00:07:51,520 --> 00:07:54,200 with one of the most iconic photographs of the war. 79 00:08:03,600 --> 00:08:06,560 But the battle for Iwo Jima was far from over. 80 00:08:12,640 --> 00:08:15,680 The rest of the island was still in Japanese hands. 81 00:08:21,520 --> 00:08:23,760 The next day, the Marines captured the first 82 00:08:23,880 --> 00:08:26,840 of the island's strategically vital airfields. 83 00:08:36,880 --> 00:08:39,400 But Kuribayashi had told his men to take 84 00:08:39,520 --> 00:08:41,640 as many of the enemy with them as possible. 85 00:08:41,760 --> 00:08:45,480 Their duty to the Emperor - to die on the island. 86 00:08:55,800 --> 00:08:59,680 It meant each assault became a bloody frontal affair. 87 00:09:06,240 --> 00:09:08,520 It took two weeks before the remaining 88 00:09:08,640 --> 00:09:12,120 two airfields on the island were in US hands. 89 00:09:14,120 --> 00:09:17,600 [SHELL WHISTLING] 90 00:09:17,720 --> 00:09:20,240 Even as the fighting continued, 91 00:09:20,360 --> 00:09:23,920 the US Airforce began to make use of Iwo Jima's airfields. 92 00:09:28,760 --> 00:09:31,880 During the late spring and summer of 1945, 93 00:09:32,000 --> 00:09:35,280 over 2,500 damaged US bombers 94 00:09:35,400 --> 00:09:38,160 made emergency landings on the island, 95 00:09:38,280 --> 00:09:40,760 often saving the lives of their crews. 96 00:09:44,760 --> 00:09:46,960 Finally, at the end of March, 97 00:09:47,080 --> 00:09:50,000 after some six weeks of ferocious fighting, 98 00:09:50,120 --> 00:09:53,520 the last Japanese resistance was snuffed out. 99 00:09:59,920 --> 00:10:04,160 But the capture of Iwo Jima had come at a terrible price. 100 00:10:11,240 --> 00:10:16,560 Only 200 of the 22,000-strong Japanese garrison survived. 101 00:10:21,000 --> 00:10:23,560 The Americans had also suffered badly. 102 00:10:23,680 --> 00:10:28,440 Nearly 7,000 Marines had been killed and some 18,000 wounded. 103 00:10:32,440 --> 00:10:35,040 The Americans finally had the base they needed. 104 00:10:35,160 --> 00:10:37,040 But it was now clear 105 00:10:37,160 --> 00:10:39,560 that unless the US could come up with an alternative, 106 00:10:39,680 --> 00:10:41,640 any invasion of Japan 107 00:10:41,760 --> 00:10:45,760 would be paid for in tens of thousands of American lives. 108 00:10:54,680 --> 00:10:57,840 In the United States, one group of military planners 109 00:10:57,960 --> 00:11:02,280 had long believed there was an alternative to invading Japan. 110 00:11:02,400 --> 00:11:05,680 It was called strategic bombing. 111 00:11:10,200 --> 00:11:12,720 This involved carefully targeted bombing raids 112 00:11:12,840 --> 00:11:15,600 designed to destroy Japan's infrastructure, 113 00:11:15,720 --> 00:11:19,000 industry and ability to wage war. 114 00:11:22,320 --> 00:11:24,440 But in the first years of the Pacific war, 115 00:11:24,560 --> 00:11:26,240 there was a problem. 116 00:11:26,360 --> 00:11:29,400 Japan lay beyond the range of America's bombers. 117 00:11:31,680 --> 00:11:34,920 In April 1942, the US had managed to launch 118 00:11:35,040 --> 00:11:37,360 a one-off bombing raid on Tokyo. 119 00:11:39,840 --> 00:11:41,880 But it had pushed the bombers to their limits 120 00:11:42,000 --> 00:11:45,080 and was never a practical long-term option. 121 00:11:49,080 --> 00:11:52,960 Then, in early 1944, the Boeing Aircraft Corporation 122 00:11:53,080 --> 00:11:56,600 produced a revolutionary new heavy bomber, 123 00:11:56,720 --> 00:11:59,280 the B-29 Superfortress. 124 00:12:02,120 --> 00:12:04,520 It could carry 20,000 lbs of bombs 125 00:12:04,640 --> 00:12:07,840 over a range of 3,250 miles. 126 00:12:13,240 --> 00:12:16,120 Suddenly, Japan was just about in reach 127 00:12:16,240 --> 00:12:19,080 of America's forward bases in the Pacific. 128 00:12:25,680 --> 00:12:30,600 In summer 1944, nine months before the assault on Iwo Jima, 129 00:12:30,720 --> 00:12:34,920 US B-29s stationed at Chengdu in south-west China, 130 00:12:35,040 --> 00:12:38,640 began a series of strategic bombing raids on Japan. 131 00:12:41,680 --> 00:12:44,320 But range was still an issue. 132 00:12:44,440 --> 00:12:46,760 It was too far for a fighter escort, 133 00:12:46,880 --> 00:12:49,400 so the Superfortresses had to fly alone, 134 00:12:49,520 --> 00:12:52,360 staying at high altitude for their own safety. 135 00:12:56,360 --> 00:12:58,640 Even then, the range was also only just within limits 136 00:12:58,760 --> 00:13:01,760 and there was no room for navigational error. 137 00:13:10,880 --> 00:13:13,440 Many of the bombs missed their targets. 138 00:13:18,800 --> 00:13:22,200 Then in July 1944, there was a development 139 00:13:22,320 --> 00:13:25,920 that gave strategic bombing a new lease of life. 140 00:13:27,600 --> 00:13:30,160 The US navy captured the Mariana Islands 141 00:13:30,280 --> 00:13:32,320 in the central Pacific. 142 00:13:33,920 --> 00:13:37,120 They were only 1,500 miles from the Japanese homeland. 143 00:13:40,720 --> 00:13:44,480 This was well within the B-29's operating range. 144 00:13:44,600 --> 00:13:47,760 The odds for a successful bombing campaign on Japan 145 00:13:47,880 --> 00:13:50,040 had dramatically improved. 146 00:13:58,160 --> 00:14:01,560 On November 24th, over 100 Superfortresses 147 00:14:01,680 --> 00:14:03,680 took off from the Marianas. 148 00:14:03,800 --> 00:14:08,680 Their target - the Nakajima aircraft factory in Tokyo. 149 00:14:20,520 --> 00:14:24,400 But only 48 bombs struck anywhere near the target. 150 00:14:28,400 --> 00:14:32,800 For three months, more raids targeted other industrial sites. 151 00:14:36,000 --> 00:14:39,120 But the B-29's were still flying without a fighter escort 152 00:14:39,240 --> 00:14:42,600 and still dropping their bombs from high altitude. 153 00:14:45,200 --> 00:14:47,880 The targets were often obscured by cloud 154 00:14:48,000 --> 00:14:51,800 and jet stream winds made accurate bomb aiming impossible. 155 00:14:56,640 --> 00:15:01,280 To make matters worse, the B-29s suffered from engine problems. 156 00:15:02,480 --> 00:15:06,120 There were also attacks from Kamikaze pilots. 157 00:15:06,240 --> 00:15:09,800 [MACHINE-GUN FIRE] 158 00:15:18,320 --> 00:15:20,520 By the winter of 1944, 159 00:15:20,640 --> 00:15:24,480 it was clear that strategic bombing was just not working. 160 00:15:25,520 --> 00:15:28,000 If Japan was to be bombed into submission, 161 00:15:28,120 --> 00:15:31,120 the US would have to come up with something else. 162 00:15:34,840 --> 00:15:38,640 So it was that on December 18th, 1944, 163 00:15:38,760 --> 00:15:41,600 America tried a new tactic. 164 00:15:41,720 --> 00:15:44,720 Eighty-four B-29s set off from Chengdu 165 00:15:44,840 --> 00:15:48,440 for Japanese-occupied Hankow, on the Yangtze River. 166 00:15:54,200 --> 00:15:56,160 They flew much lower than usual 167 00:15:56,280 --> 00:15:58,560 and carried mostly incendiary 168 00:15:58,680 --> 00:16:01,520 rather than high-explosive bombs. 169 00:16:11,240 --> 00:16:13,880 Hankow was devastated. 170 00:16:18,960 --> 00:16:20,600 The raid was more effective 171 00:16:20,720 --> 00:16:24,400 than almost any of the previous strategic bombing raids. 172 00:16:27,800 --> 00:16:30,760 The US appeared to have found a way forward, 173 00:16:30,880 --> 00:16:33,680 fire-bombing at low altitude. 174 00:16:35,760 --> 00:16:38,440 The US bomber commander in the Marianas, 175 00:16:38,560 --> 00:16:40,320 General Curtis LeMay, 176 00:16:40,440 --> 00:16:43,680 now ordered the systematic fire-bombing of Japan. 177 00:16:45,480 --> 00:16:49,520 It was the same tactic that Britain had employed in Germany. 178 00:16:57,240 --> 00:17:00,320 On the evening of March 9th, 1945, 179 00:17:00,440 --> 00:17:03,120 Pathfinder aircraft roared over Tokyo, 180 00:17:03,240 --> 00:17:05,640 dropping incendiary target indicators. 181 00:17:09,360 --> 00:17:11,720 The fires they started marked the aiming points 182 00:17:11,840 --> 00:17:14,600 for almost 300 B-29s. 183 00:17:19,240 --> 00:17:21,240 Coming in at just 5,000 feet, 184 00:17:21,360 --> 00:17:24,720 they dropped over 2,000 tons of incendiary bombs. 185 00:17:29,760 --> 00:17:33,120 The flimsy wooden houses stood no chance. 186 00:17:37,120 --> 00:17:40,920 Air was sucked in, creating towering firestorms, 187 00:17:41,040 --> 00:17:43,680 which raced faster than people could run. 188 00:17:51,800 --> 00:17:53,360 The glow from the burning city 189 00:17:53,480 --> 00:17:56,120 could be seen over 150 miles away. 190 00:18:04,920 --> 00:18:08,200 When the all-clear finally sounded the following morning, 191 00:18:08,320 --> 00:18:12,400 16 square miles of Tokyo had been obliterated. 192 00:18:15,640 --> 00:18:18,640 Over 100,000 of its citizens were killed 193 00:18:18,760 --> 00:18:21,720 and a million made homeless. 194 00:18:28,160 --> 00:18:32,320 Tokyo was not the only city to face this devastating new tactic. 195 00:18:36,520 --> 00:18:39,560 Nagoya was set ablaze two nights later. 196 00:18:41,680 --> 00:18:46,200 Then Osaka and Kobe during the following week. 197 00:18:49,280 --> 00:18:51,920 Firestorms engulfed whole areas, 198 00:18:52,040 --> 00:18:55,280 destroying houses and industrial facilities. 199 00:18:57,880 --> 00:19:01,040 But American success was coming at a price. 200 00:19:04,600 --> 00:19:07,360 Without escorts, the low-flying US bombers 201 00:19:07,480 --> 00:19:10,480 were dangerously vulnerable to Japanese fighters. 202 00:19:14,200 --> 00:19:16,440 American losses now mounted. 203 00:19:17,680 --> 00:19:20,680 If the bombing campaign was ever to succeed, 204 00:19:20,800 --> 00:19:24,120 the US needed bases even closer to Japan. 205 00:19:33,440 --> 00:19:35,800 Within weeks, Iwo Jima fell. 206 00:19:35,920 --> 00:19:38,680 Now, at last, the US air force 207 00:19:38,800 --> 00:19:40,840 not only had a base for its bombers 208 00:19:40,960 --> 00:19:43,880 within easy striking distance of Japan, 209 00:19:44,000 --> 00:19:47,920 it could finally use its Mustang fighters to escort them. 210 00:19:54,840 --> 00:19:57,920 During the late spring and early summer of 1945, 211 00:19:58,040 --> 00:20:03,640 strikes of up to 500 bombers attacked Japan every other day. 212 00:20:12,800 --> 00:20:16,120 Once the largest industrial areas had been crippled, 213 00:20:16,240 --> 00:20:19,040 LeMay moved on to lesser targets. 214 00:20:22,200 --> 00:20:25,360 Yet in the face of catastrophic damage 215 00:20:25,480 --> 00:20:27,400 and an appalling death toll, 216 00:20:27,520 --> 00:20:30,520 the Japanese showed no sign of cracking. 217 00:20:32,480 --> 00:20:34,120 It finally dawned on the Americans 218 00:20:34,240 --> 00:20:36,000 that strategic bombing alone 219 00:20:36,120 --> 00:20:38,360 was never going to defeat Japan. 220 00:20:41,000 --> 00:20:43,760 It looked like a full-scale invasion of the country 221 00:20:43,880 --> 00:20:46,240 was becoming inevitable. 222 00:20:53,040 --> 00:20:54,680 For the US battle planners, 223 00:20:54,800 --> 00:20:57,600 the next logical step in the land campaign 224 00:20:57,720 --> 00:21:00,760 was the Japanese island of Okinawa. 225 00:21:02,120 --> 00:21:06,560 It lay a mere 350 miles from the Japanese homeland islands. 226 00:21:11,920 --> 00:21:15,600 The island was defended by more than 120,000 men. 227 00:21:18,480 --> 00:21:21,880 The Japanese commander, General Mitsuru Ishijima, 228 00:21:22,000 --> 00:21:25,680 was determined to turn it into an American graveyard. 229 00:21:32,840 --> 00:21:36,400 Once again, Admiral Nimitz, the US commander in the region, 230 00:21:36,520 --> 00:21:38,800 assembled a huge fleet. 231 00:21:43,160 --> 00:21:47,560 It included 40 aircraft carriers and 18 battleships. 232 00:21:51,840 --> 00:21:54,000 The opening bombardment of Okinawa 233 00:21:54,120 --> 00:21:58,080 began on March 23rd, 1945. 234 00:22:08,000 --> 00:22:10,600 It lasted for a whole week. 235 00:22:20,880 --> 00:22:23,400 Finally, on the morning of April 1st, 236 00:22:23,520 --> 00:22:26,400 the assault boats headed for the shore. 237 00:22:32,840 --> 00:22:36,040 To their surprise, they met almost no opposition. 238 00:22:40,720 --> 00:22:44,120 By nightfall, 60,000 men had landed 239 00:22:44,240 --> 00:22:47,240 and the beach-head was up to two miles deep. 240 00:22:52,480 --> 00:22:54,560 For the next two days, the US forces 241 00:22:54,680 --> 00:22:57,840 built up their strength and pushed across the island. 242 00:23:00,480 --> 00:23:03,080 Again, opposition was unexpectedly light. 243 00:23:08,720 --> 00:23:13,680 By April 4th, the Japanese defenders had been split in two. 244 00:23:21,880 --> 00:23:24,880 Marine divisions now headed north. 245 00:23:26,440 --> 00:23:28,880 Army units pushed south. 246 00:23:31,520 --> 00:23:34,560 The Marines continued to meet only sporadic resistance 247 00:23:34,680 --> 00:23:38,400 and within three weeks had cleared the northern part of the island. 248 00:23:41,840 --> 00:23:44,640 But it was a different story in the south. 249 00:23:45,280 --> 00:23:48,360 There, the army units ran into savage fire. 250 00:24:02,200 --> 00:24:05,640 For ten days, the Japanese held their defensive line. 251 00:24:11,080 --> 00:24:13,280 Then, when they could hold out no longer, 252 00:24:13,400 --> 00:24:16,880 they simply withdrew to the next defensive position 253 00:24:17,000 --> 00:24:19,960 and continued to resist all over again. 254 00:24:27,760 --> 00:24:30,160 Meanwhile, the Japanese also prepared to launch 255 00:24:30,280 --> 00:24:32,960 an air assault on the invasion fleet. 256 00:24:35,480 --> 00:24:37,560 Early on the morning of April 7th, 257 00:24:37,680 --> 00:24:41,720 Kamikaze pilots gathered to drink their ritual cups of sake 258 00:24:41,840 --> 00:24:45,080 and climb into their aircraft for the last time. 259 00:24:52,040 --> 00:24:55,920 Over 700 aircraft, half of them Kamikazes, 260 00:24:56,040 --> 00:24:59,720 took off and approached the US landing fleet, 261 00:25:09,200 --> 00:25:11,880 A line of radar-equipped destroyers, 262 00:25:12,000 --> 00:25:15,760 operating about 50 miles out at sea, was hit first. 263 00:25:23,960 --> 00:25:26,000 By the end of the first day of the attack, 264 00:25:26,120 --> 00:25:28,480 two US destroyers had been sunk. 265 00:25:34,880 --> 00:25:37,360 Twenty-four other vessels were also damaged. 266 00:25:43,400 --> 00:25:47,400 But the Japanese had lost over 300 planes. 267 00:25:50,800 --> 00:25:52,840 Over the following days, 268 00:25:52,960 --> 00:25:55,680 the Japanese introduced a new weapon. 269 00:25:57,880 --> 00:26:00,600 The Okha, or "Cherry Blossom", 270 00:26:00,720 --> 00:26:03,000 was a rocket-powered suicide missile 271 00:26:03,120 --> 00:26:06,240 driven by a Kamikaze pilot. 272 00:26:10,120 --> 00:26:12,240 It was launched from a bomber 273 00:26:12,360 --> 00:26:17,160 and carried a massive 2,650 pound warhead. 274 00:26:23,040 --> 00:26:27,960 On April 12th, another US destroyer was hit and sunk. 275 00:26:34,440 --> 00:26:36,600 The Okha looked deadly. 276 00:26:37,320 --> 00:26:39,640 But US fighters quickly learnt to intercept 277 00:26:39,760 --> 00:26:42,480 and shoot down the bombers that carried them. 278 00:26:49,920 --> 00:26:53,120 In desperation, the Japanese navy 279 00:26:53,240 --> 00:26:55,520 now sent a suicide mission of its own. 280 00:26:57,280 --> 00:27:00,600 The "Yamato", Japan's largest battleship, 281 00:27:00,720 --> 00:27:03,840 was loaded with just enough fuel to reach Okinawa 282 00:27:03,960 --> 00:27:06,040 and ordered to fight to the death, 283 00:27:06,160 --> 00:27:09,280 sinking as many US ships as possible in the process. 284 00:27:12,120 --> 00:27:16,280 But as the giant ship approached Okinawa, it was spotted. 285 00:27:20,240 --> 00:27:24,120 Some 400 US aircraft descended on it. 286 00:27:28,800 --> 00:27:31,280 Within two hours, it blew up. 287 00:27:37,400 --> 00:27:40,600 The fireball could be seen for over 100 miles. 288 00:27:47,560 --> 00:27:50,280 Back on Okinawa, torrential rain 289 00:27:50,400 --> 00:27:53,400 now turned the battlefield into a quagmire. 290 00:27:56,280 --> 00:27:59,960 For over a month, US troops struggled to push their way south. 291 00:28:00,640 --> 00:28:02,760 [GUNFIRE] 292 00:28:06,040 --> 00:28:08,360 Every cave or dugout entrance 293 00:28:08,480 --> 00:28:10,880 had to be blasted by flamethrowers, 294 00:28:11,000 --> 00:28:13,040 grenades and explosives. 295 00:28:16,920 --> 00:28:20,080 As before, as one defensive line was overrun, 296 00:28:20,200 --> 00:28:22,880 the Japanese slipped back to another, 297 00:28:23,000 --> 00:28:26,840 and the whole grim business would start again. 298 00:28:32,000 --> 00:28:35,000 US casualties rapidly mounted. 299 00:28:44,480 --> 00:28:49,160 Finally, on June 1st, the town of Shuri was captured. 300 00:28:53,680 --> 00:28:57,520 Then, on June 4th, a new contingent of Marines landed 301 00:28:57,640 --> 00:29:00,000 to the south of Naha, the island's capital, 302 00:29:00,120 --> 00:29:03,880 and linked up with troops pushing down from the north. 303 00:29:07,280 --> 00:29:09,440 [MACHINE-GUN FIRE] 304 00:29:16,240 --> 00:29:19,920 Savage fighting continued, but by June 17th, 305 00:29:20,040 --> 00:29:23,360 the Japanese resistance was collapsing. 306 00:29:27,560 --> 00:29:32,360 Five days later, the Americans finally secured Okinawa. 307 00:29:37,680 --> 00:29:41,040 The Japanese commander, General Ishijima, 308 00:29:41,160 --> 00:29:44,280 committed ritual suicide - hara kiri. 309 00:29:50,680 --> 00:29:54,680 Over 7,000 prisoners were taken, the first time ever 310 00:29:54,800 --> 00:29:58,520 that such large numbers of Japanese troops had surrendered. 311 00:30:01,120 --> 00:30:04,560 It had been a bloody and exhausting campaign. 312 00:30:07,160 --> 00:30:10,200 100,000 Japanese soldiers, 313 00:30:10,320 --> 00:30:13,520 and some 40,000 civilians had been killed. 314 00:30:17,840 --> 00:30:22,800 The Americans, for their part, had lost over 15,000 men. 315 00:30:25,480 --> 00:30:30,040 It was a sobering reminder of what would await the American forces 316 00:30:30,160 --> 00:30:33,000 if they invaded the main Japanese home islands. 317 00:30:34,320 --> 00:30:37,120 More than ever, they needed a solution. 318 00:30:37,960 --> 00:30:43,240 A way to obliterate Japan's will to fight once and for all. 319 00:30:56,200 --> 00:30:59,520 The victory at Okinawa meant America's military planners 320 00:30:59,640 --> 00:31:02,360 now had to decide what to do next. 321 00:31:05,240 --> 00:31:07,120 Despite shattering defeats, 322 00:31:07,240 --> 00:31:10,480 the Japanese still showed no sign of surrendering. 323 00:31:13,480 --> 00:31:16,320 Some US commanders argued for a continuation 324 00:31:16,440 --> 00:31:18,560 of the fire-bombing campaign. 325 00:31:20,840 --> 00:31:22,920 But by the summer of 1945, 326 00:31:23,040 --> 00:31:26,680 it was clear that bombing alone would never defeat Japan. 327 00:31:27,440 --> 00:31:30,480 An invasion seemed unavoidable. 328 00:31:33,200 --> 00:31:36,320 But the question was: at what price? 329 00:31:37,120 --> 00:31:40,760 [BUGLE SOUNDS] 330 00:31:40,880 --> 00:31:42,400 [VOLLEYS FIRE] 331 00:31:49,240 --> 00:31:52,040 The Japanese had some one million men 332 00:31:52,160 --> 00:31:54,080 defending the home islands. 333 00:31:57,160 --> 00:32:00,720 They were supported by about 5,000 aircraft 334 00:32:00,840 --> 00:32:04,960 and new Kamikaze pilots were being trained all the time. 335 00:32:15,080 --> 00:32:18,040 Mass suicide attacks by civilian volunteers 336 00:32:18,160 --> 00:32:20,120 could also be expected. 337 00:32:22,880 --> 00:32:25,480 A bloodbath seemed inevitable. 338 00:32:26,120 --> 00:32:30,640 It was estimated that over a quarter of a million American lives might be lost. 339 00:32:35,160 --> 00:32:39,400 Then, in July 1945, the new US President, 340 00:32:39,520 --> 00:32:41,960 Harry S. Truman, heard about the results 341 00:32:42,080 --> 00:32:45,880 of a top secret Allied scientific research program. 342 00:32:46,000 --> 00:32:48,920 It was called the "Manhattan Project". 343 00:32:53,160 --> 00:32:55,160 For three years, Allied scientists 344 00:32:55,280 --> 00:32:57,640 had been working on an atom bomb - 345 00:32:57,760 --> 00:33:00,400 a weapon that draws on the vast quantities of energy 346 00:33:00,520 --> 00:33:03,960 released when an atom is split. 347 00:33:06,120 --> 00:33:09,480 It would have an unimaginable destructive force. 348 00:33:15,920 --> 00:33:19,280 The project was led by US General Leslie Groves, 349 00:33:19,400 --> 00:33:21,040 an army engineer. 350 00:33:24,760 --> 00:33:27,240 The scientific director was Robert Oppenheimer, 351 00:33:27,360 --> 00:33:30,560 a 39-year-old physicist from the University of California. 352 00:33:33,320 --> 00:33:35,680 Over a three year period, the program had recruited 353 00:33:35,800 --> 00:33:38,840 many of the Allies' best scientific brains. 354 00:33:41,240 --> 00:33:44,720 Two radioactive materials seemed to offer most promise 355 00:33:44,840 --> 00:33:46,720 as fuels for the new bombs. 356 00:33:49,880 --> 00:33:53,080 One was a naturally occurring form of uranium 357 00:33:53,200 --> 00:33:55,680 called Uranium-235. 358 00:33:55,800 --> 00:33:59,960 It was processed at a vast factory at Oak Ridge, Tennessee. 359 00:34:01,720 --> 00:34:05,520 The other was plutonium - a man-made material 360 00:34:05,640 --> 00:34:08,320 manufactured in primitive nuclear reactors 361 00:34:08,440 --> 00:34:11,000 at Hanford in Washington State. 362 00:34:14,280 --> 00:34:16,520 The research was co-ordinated and conducted 363 00:34:16,640 --> 00:34:19,280 by a team of scientists at Los Alamos, 364 00:34:19,400 --> 00:34:21,560 a specially-built laboratory complex 365 00:34:21,680 --> 00:34:23,680 in the New Mexico desert. 366 00:34:30,920 --> 00:34:32,680 By early 1945, 367 00:34:32,800 --> 00:34:36,120 the Los Alamo scientists were pretty confident 368 00:34:36,240 --> 00:34:38,720 that they had a uranium bomb that worked. 369 00:34:40,400 --> 00:34:44,320 But it required huge quantities of Uranium-235 370 00:34:44,440 --> 00:34:47,440 and the scientists worried that they didn't have enough of it. 371 00:34:49,640 --> 00:34:53,880 So they also designed a second bomb that used plutonium. 372 00:34:55,040 --> 00:34:56,800 But this, unlike the uranium bomb, 373 00:34:56,920 --> 00:34:58,760 was much less well understood 374 00:34:58,880 --> 00:35:01,040 and they weren't sure it would work. 375 00:35:02,080 --> 00:35:05,640 Before it could be used, they would need to test it. 376 00:35:06,680 --> 00:35:08,960 By early July 1945, 377 00:35:09,080 --> 00:35:12,360 after an expenditure of more than two billion dollars, 378 00:35:12,480 --> 00:35:14,760 the plutonium bomb was ready for trials. 379 00:35:19,160 --> 00:35:21,240 The "gadget", as it was called, 380 00:35:21,360 --> 00:35:24,960 was mounted on a steel tower in the New Mexico desert. 381 00:35:28,440 --> 00:35:34,480 At 5:30 in the morning of July 16th, the atomic age began. 382 00:35:47,560 --> 00:35:51,000 News that "Operation Trinity" had been successful 383 00:35:51,120 --> 00:35:53,400 was swiftly passed to President Truman. 384 00:35:54,480 --> 00:35:56,280 He had recently arrived at a conference 385 00:35:56,400 --> 00:35:58,280 in the Berlin suburb of Potsdam, 386 00:35:58,400 --> 00:36:00,440 meeting with Stalin and Churchill, 387 00:36:00,560 --> 00:36:02,800 discussing the future of Europe. 388 00:36:04,520 --> 00:36:06,480 Truman didn't hesitate. 389 00:36:08,480 --> 00:36:11,280 He ordered his commanders to prepare to drop the new bombs 390 00:36:11,400 --> 00:36:13,360 on Japan as soon as possible. 391 00:36:18,880 --> 00:36:22,800 Two bombs - a uranium device codenamed "Little Boy" 392 00:36:22,920 --> 00:36:25,760 and a plutonium bomb called "Fat Man" - 393 00:36:25,880 --> 00:36:29,160 were now transported to the Mariana Islands. 394 00:36:34,840 --> 00:36:38,600 There, the immensely experienced Colonel Paul Tibbets, 395 00:36:38,720 --> 00:36:42,200 leader of the specially-trained 509th Composite Group, 396 00:36:42,320 --> 00:36:44,600 prepared his B-29. 397 00:36:50,200 --> 00:36:52,640 At 2:45 in the morning of August 6th, 398 00:36:52,760 --> 00:36:54,880 Tibbets lifted his plane, 399 00:36:55,000 --> 00:36:58,760 named "Enola Gay" after his mother, off the runway. 400 00:37:01,000 --> 00:37:03,800 On board he was carrying "Little Boy". 401 00:37:12,160 --> 00:37:16,200 The flight to the target, Japan's fourth largest city, 402 00:37:16,320 --> 00:37:18,760 Hiroshima, went without a hitch. 403 00:37:23,680 --> 00:37:26,600 At 08:00am, on a bright sunny morning, 404 00:37:26,720 --> 00:37:30,360 "Enola Gay" approached the city at 33,000 feet. 405 00:37:35,360 --> 00:37:39,280 Then, at just after 08:15, Little Boy was released. 406 00:37:55,880 --> 00:38:01,360 The uranium bomb had the power of nearly 13,000 tons of TNT. 407 00:38:03,400 --> 00:38:05,680 The temperature beneath the mushroom cloud 408 00:38:05,800 --> 00:38:08,320 reached 5,000 degrees Centigrade. 409 00:38:12,240 --> 00:38:15,720 Thousands of people were instantly vaporized. 410 00:38:23,880 --> 00:38:27,400 Shockwaves levelled buildings up to a five mile radius. 411 00:38:34,760 --> 00:38:37,680 Estimates of the death toll vary hugely. 412 00:38:37,800 --> 00:38:42,160 Some put it at 40,000 people, others at 100,000. 413 00:38:49,280 --> 00:38:52,480 Many suffered from terrible burns and blistering. 414 00:38:58,960 --> 00:39:01,040 Over the course of the following weeks, 415 00:39:01,160 --> 00:39:05,000 thousands more people died from radiation poisoning. 416 00:39:09,720 --> 00:39:13,880 On August 7, 1945, President Truman told the world 417 00:39:14,000 --> 00:39:17,640 about the bomb and issued Japan with a warning. 418 00:39:17,760 --> 00:39:20,240 Let there be no mistake, 419 00:39:20,360 --> 00:39:24,400 we shall completely destroy Japan's power to make war. 420 00:39:25,600 --> 00:39:28,520 They may expect a rain of ruin from the air, 421 00:39:28,640 --> 00:39:32,040 the like of which has never been seen on this Earth. 422 00:39:35,160 --> 00:39:38,000 But no Japanese surrender was received. 423 00:39:40,120 --> 00:39:42,920 Two days later, on August 9th, 424 00:39:43,040 --> 00:39:47,520 "Fat Man" was dropped on the major military port of Nagasaki. 425 00:39:52,160 --> 00:39:55,480 The plutonium bomb was even more powerful. 426 00:40:06,960 --> 00:40:09,600 In fact, the bomb fell way off target, 427 00:40:09,720 --> 00:40:12,560 but it still caused massive destruction. 428 00:40:18,200 --> 00:40:21,760 Between 35,000 and 50,000 people are estimated 429 00:40:21,880 --> 00:40:24,160 to have died in the explosion. 430 00:40:31,480 --> 00:40:34,240 The Japanese government could now have no doubt 431 00:40:34,360 --> 00:40:38,200 that they faced a new and horrific weapon, 432 00:40:38,320 --> 00:40:40,360 but the question remained, 433 00:40:40,480 --> 00:40:43,400 would even this force them to surrender? 434 00:40:54,320 --> 00:40:57,080 The Nagasaki bomb was followed by a stark warning 435 00:40:57,200 --> 00:40:59,720 from US Secretary of State James Byrnes. 436 00:41:00,400 --> 00:41:02,160 There is still time, 437 00:41:02,280 --> 00:41:06,760 but little time for the Japanese to save themselves 438 00:41:06,880 --> 00:41:10,480 from the destruction which threatens them. 439 00:41:12,840 --> 00:41:14,880 The intention was clear - 440 00:41:15,000 --> 00:41:18,440 the atom bomb would be used again and again 441 00:41:18,560 --> 00:41:20,680 until Japan gave in. 442 00:41:25,040 --> 00:41:29,480 That same day, Japan's position became even more precarious. 443 00:41:29,600 --> 00:41:32,720 [GUNFIRE] 444 00:41:32,840 --> 00:41:35,200 Early in the morning of August 9th, 445 00:41:35,320 --> 00:41:37,600 a million and a half Soviet troops 446 00:41:37,720 --> 00:41:40,400 stormed into Manchuria and northern China. 447 00:41:45,960 --> 00:41:49,280 The Soviet leader, Josef Stalin, was not only after territory. 448 00:41:49,400 --> 00:41:52,400 He wanted a say in any final peace settlement 449 00:41:52,520 --> 00:41:54,800 in the Far East. 450 00:41:59,040 --> 00:42:02,440 There were still over a million Japanese troops in the area 451 00:42:02,560 --> 00:42:06,000 but the Red Army Blitzkrieg was unstoppable. 452 00:42:06,120 --> 00:42:10,120 The Japanese position in the war had become untenable. 453 00:42:16,960 --> 00:42:19,480 That evening, Emperor Hirohito met 454 00:42:19,600 --> 00:42:23,040 with his six top military and political leaders. 455 00:42:25,280 --> 00:42:27,400 The war cabinet was divided. 456 00:42:27,520 --> 00:42:29,560 Three, led by the Prime Minister, 457 00:42:29,680 --> 00:42:32,920 Baron Kantaro Suzuki, argued for peace. 458 00:42:35,800 --> 00:42:38,800 The other three wanted to continue fighting. 459 00:42:42,000 --> 00:42:43,720 It was deadlock. 460 00:42:43,840 --> 00:42:47,000 Then the Japanese Prime Minster broke with all precedent 461 00:42:47,120 --> 00:42:49,840 and asked the Emperor for his opinion. 462 00:42:52,440 --> 00:42:55,360 Emperor Hirohito voted for peace, 463 00:42:55,480 --> 00:42:59,040 on condition that his position as head of state was maintained. 464 00:43:01,560 --> 00:43:03,240 The next morning, a proposal was sent 465 00:43:03,360 --> 00:43:05,720 to the US Secretary of State James Byrnes. 466 00:43:08,400 --> 00:43:10,200 Byrnes rejected it. 467 00:43:10,320 --> 00:43:13,360 Only unconditional surrender would do. 468 00:43:17,800 --> 00:43:21,120 As the Japanese war cabinet argued amongst itself, 469 00:43:21,240 --> 00:43:24,680 Soviet troops continued to tear into Mongolia. 470 00:43:26,760 --> 00:43:30,960 At the same time, American fighters now roamed freely over Japan, 471 00:43:31,080 --> 00:43:34,600 shooting up military targets and transport links at will. 472 00:43:43,680 --> 00:43:47,760 Massive air raids continued to devastate Japan. 473 00:43:59,840 --> 00:44:03,840 Then, on August 14th, the Truman administration 474 00:44:03,960 --> 00:44:07,880 sent word that the Emperor's position would be safeguarded, 475 00:44:08,000 --> 00:44:10,200 provided he agreed to accept the orders 476 00:44:10,320 --> 00:44:13,440 of the Supreme Commander of Allied Forces. 477 00:44:16,400 --> 00:44:21,240 Hirohito used his huge prestige to instruct the war cabinet 478 00:44:21,360 --> 00:44:25,720 to "endure the unendurable" and accept the terms. 479 00:44:27,760 --> 00:44:30,760 That day in Washington, President Truman announced 480 00:44:30,880 --> 00:44:33,520 that Japan had surrendered unconditionally. 481 00:44:34,680 --> 00:44:36,960 TRUMAN: I deem this reply a full acceptance 482 00:44:37,080 --> 00:44:40,480 of the Potsdam declaration, which specifies 483 00:44:40,600 --> 00:44:43,080 the unconditional surrender of Japan. 484 00:44:46,040 --> 00:44:47,800 Cheering, singing crowds 485 00:44:47,920 --> 00:44:50,560 erupted onto the streets of every American city. 486 00:44:50,680 --> 00:44:53,280 [CHEERING] 487 00:45:10,080 --> 00:45:13,400 In Britain, it was midnight when the new Prime Minister, 488 00:45:13,520 --> 00:45:16,320 Clement Atlee, broadcast the news. 489 00:45:17,280 --> 00:45:19,920 ATLEE: Japan has today surrendered. 490 00:45:20,960 --> 00:45:23,480 The last of our enemies is laid low. 491 00:45:23,600 --> 00:45:26,400 Peace has once again come to the world. 492 00:45:27,680 --> 00:45:31,800 Let us thank God for this great deliverance and his mercies. 493 00:45:32,400 --> 00:45:33,920 Long live the King. 494 00:45:34,040 --> 00:45:36,480 [CHEERING] 495 00:45:37,920 --> 00:45:41,360 Within minutes, crowds appeared on the streets of London. 496 00:45:44,800 --> 00:45:47,480 Many gathered outside Buckingham Palace. 497 00:45:50,720 --> 00:45:54,800 A giant street party lasted well into the following day. 498 00:46:08,840 --> 00:46:11,560 The next morning, August 15th, 499 00:46:11,680 --> 00:46:13,320 an astounded Japanese people 500 00:46:13,440 --> 00:46:15,760 listened to the voice of their God Emperor 501 00:46:15,880 --> 00:46:17,440 for the very first time. 502 00:46:17,560 --> 00:46:23,760 [HIROHITO SPEAKS IN JAPANESE] 503 00:46:24,640 --> 00:46:28,760 He told them that Japan's position had become impossible 504 00:46:28,880 --> 00:46:31,640 and the country was obliged to surrender. 505 00:46:31,760 --> 00:46:35,240 All military forces must lay down their arms. 506 00:46:39,560 --> 00:46:43,760 Such was the emperor's prestige that almost every unit obeyed. 507 00:46:50,320 --> 00:46:53,680 But in Manchuria, despite the Japanese ceasefire, 508 00:46:53,800 --> 00:46:56,200 the Soviet forces fought on. 509 00:47:05,520 --> 00:47:08,200 [MACHINE-GUN FIRE] 510 00:47:10,800 --> 00:47:15,840 For the first time, large numbers of Japanese troops now surrendered. 511 00:47:23,680 --> 00:47:26,920 Nevertheless, the Soviets, determined to seize 512 00:47:27,040 --> 00:47:30,360 as much territory as possible, continued to advance. 513 00:47:32,600 --> 00:47:36,280 Stalin wouldn't stop the fighting for another week. 514 00:47:39,320 --> 00:47:41,400 By then the whole of Manchuria, 515 00:47:41,520 --> 00:47:43,200 half of Korea, 516 00:47:43,320 --> 00:47:46,440 and part of northern China were under his control. 517 00:47:51,240 --> 00:47:54,320 Elsewhere in South-East Asia, in the Philippines, 518 00:47:54,440 --> 00:47:56,160 and on many of the Pacific islands 519 00:47:56,280 --> 00:47:58,120 bypassed by the Americans, 520 00:47:58,240 --> 00:48:00,200 it took weeks for news of the surrender 521 00:48:00,320 --> 00:48:03,400 to reach isolated Japanese garrisons. 522 00:48:08,400 --> 00:48:11,240 Some Japanese soldiers would remain hidden in the jungle 523 00:48:11,360 --> 00:48:13,280 for more than 30 years. 524 00:48:18,400 --> 00:48:21,000 Finally, on August 28th, 525 00:48:21,120 --> 00:48:23,080 two weeks after the surrender, 526 00:48:23,200 --> 00:48:25,960 the first US troops arrived in Japan. 527 00:48:31,200 --> 00:48:34,320 A huge US fleet gathered in Tokyo Bay, 528 00:48:34,440 --> 00:48:36,600 sailing past the shattered hulks 529 00:48:36,720 --> 00:48:39,000 of the once-proud Japanese navy 530 00:48:39,120 --> 00:48:42,040 that they had so comprehensively defeated. 531 00:48:53,320 --> 00:48:57,400 Several days later, on September 2nd, 1945, 532 00:48:57,520 --> 00:49:02,800 a Japanese delegation came aboard the USS battleship "Missouri". 533 00:49:08,120 --> 00:49:11,440 On its quarterdeck, the new Japanese foreign minister, 534 00:49:11,560 --> 00:49:13,560 Mamoru Shigemitsu, 535 00:49:13,680 --> 00:49:17,000 signed the document of unconditional surrender. 536 00:49:19,400 --> 00:49:23,160 It was countersigned by US General Douglas MacArthur, 537 00:49:23,280 --> 00:49:25,320 the man who would effectively run Japan 538 00:49:25,440 --> 00:49:27,880 for the next six years. 539 00:49:28,920 --> 00:49:31,760 As supreme commander for the Allied powers, 540 00:49:33,000 --> 00:49:35,560 I announce it my firm purpose 541 00:49:35,680 --> 00:49:38,800 in the tradition of the countries I represent, 542 00:49:39,520 --> 00:49:42,720 to proceed in the discharge of my responsibilities 543 00:49:42,840 --> 00:49:44,840 with justice and tolerance. 544 00:49:44,960 --> 00:49:49,720 Then a force of more than 2,000 Allied aircraft roared overhead. 545 00:49:51,960 --> 00:49:54,600 It was a fitting tribute to the overwhelming power 546 00:49:54,720 --> 00:49:57,960 which had finally brought Germany and Japan 547 00:49:58,080 --> 00:49:59,800 to utter defeat. 548 00:50:09,400 --> 00:50:12,000 World War Two was at an end. 549 00:50:13,440 --> 00:50:16,200 Japan's ruthless desire to wage war 550 00:50:16,320 --> 00:50:20,720 had been crushed by a weapon of awesome destructive power. 551 00:50:22,520 --> 00:50:25,160 Now in the East, as in the West, 552 00:50:25,280 --> 00:50:28,520 the world would be divided and shared along new lines. 553 00:50:30,720 --> 00:50:33,600 New allegiances would be formed, 554 00:50:33,720 --> 00:50:36,600 and new enemies would vie for global influence, 555 00:50:36,720 --> 00:50:40,040 under the specter of nuclear war. 556 00:50:41,040 --> 00:50:45,400 A new era in world history had begun. 557 00:50:46,920 --> 00:50:49,200 [OUTRO MUSIC]