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The Battle of Okinawa, codenamed Operation Iceberg, was fought from April 1 to June 22, 1945, between Allied forces—primarily U.S. troops—and Imperial Japan on the island of Okinawa. As the last major battle of the Pacific War before the atomic bombings, it was one of the deadliest, involving massive naval support, fierce kamikaze attacks, and devastating civilian casualties. More Less
Sep 18, 1931
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The Cornerstone of Peace counts include all Okinawan casualties in the Pacific War in the 15 years from the Manchurian Incident, extending the commemoration far beyond the Battle of Okinawa itself.
Mar 26, 1944 - Sep 2, 1946
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The monument's counts also include those who died in Okinawa from war-related events in the year before the battle and the year after the surrender, broadening the scope of remembrance.
Mar 26, 1945 - Sep 2, 1945
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The numbers on the Cornerstone of Peace correspond to recorded deaths during the Battle of Okinawa from the American landings in the Kerama Islands on 26 March 1945 to the signing of the Japanese surrender on 2 September 1945.
Image source: Battle of Okinawa
Jan 1, 1970
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Following his capture, Hiromichi Yahara, the most senior Japanese officer to survive the battle, later authored a book titled The Battle for Okinawa, providing a rare senior-level account of the Japanese perspective on the campaign.
Image source: Hiromichi Yahara
Jan 1, 1995
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In 1995, the Okinawa government erected a memorial monument named the Cornerstone of Peace in Mabuni, the site of the last fighting in southeastern Okinawa, to honor all those who died in the battle.
Jan 1, 2023
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As of 2023, the Cornerstone of Peace monument also listed 381 people from South Korea, 82 from the United Kingdom, 82 from North Korea, and 34 from Taiwan among the total 242,046 names inscribed.
Jan 1, 2023
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As of 2023, the Cornerstone of Peace monument lists 14,010 Americans among the dead, honoring the substantial sacrifices made by United States forces during the battle.
Jan 1, 2023
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As of 2023, the Cornerstone of Peace monument lists 77,823 Imperial Japanese soldiers among those who died, representing the enormous military losses suffered during the Battle of Okinawa.
Jan 1, 2023
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As of 2023, the Cornerstone of Peace monument lists 149,634 Okinawans among its names, making civilians from Okinawa the largest group of victims commemorated from the battle and related war events.
Jan 1, 2024
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As of 2024, the Cornerstone of Peace monument lists 242,225 names, an increase from the 242,046 names recorded in 2023 as additional victims continue to be identified and honored.
Image source: Cornerstone of Peace
Mar 19, 1945
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USS Franklin was hit by two bombs in a level bombing attack by a D4Y Suisei (Judy) on 19 March 1945. Along with USS Bunker Hill, it sustained very severe damage from Japanese attacks and was one of only two Essex-class aircraft carriers that did not see active service again after World War II.
Image source: USS Franklin (CV-13)
Mar 19, 1945 - Jul 30, 1945
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Between 19 March and 30 July 1945, numerous Allied naval vessels received damage or were sunk during the Battle of Okinawa, reflecting the intensity of Japanese air and kamikaze attacks against the fleet supporting the operation.
Aug 15, 1945
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On 15 August 1945, Admiral Matome Ugaki was killed while part of a kamikaze raid on Iheyajima island, launching a final sortie on the very day Japan announced its surrender.
Image source: Matome Ugaki
Mar 26, 1945
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On 26 March 1945, the United States preemptively captured the Kerama Islands surrounding Okinawa, securing anchorages and staging areas just days before the main invasion of Okinawa itself.
Apr 1, 1945
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The initial invasion of Okinawa on 1 April 1945 was the largest amphibious assault in the Pacific Theater of World War II, marking the beginning of the final major campaign before the invasion of the Japanese home islands.
Apr 1, 1945
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The land battle on Okinawa took place over about 81 days, beginning on 1 April 1945 with the American landing and continuing through fierce combat across the island.
Apr 1, 1945 - Jun 22, 1945
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The 82-day battle on Okinawa lasted from 1 April 1945 until 22 June 1945, becoming one of the bloodiest engagements of the Pacific War for soldiers and civilians alike.
Jun 22, 1945
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The Battle of Okinawa came to an end on 22 June 1945 after 82 days of fighting, concluding the last major land battle of the Pacific War.
Jul 1, 1945 - Jul 31, 1945
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After going into hiding as a civilian, Colonel Hiromichi Yahara was captured by American soldiers in July 1945. He was the most senior officer to have survived the battle on the island, having earlier told his men 'This is an order from your army commander.'
Sep 2, 1945
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The signing of the Japanese surrender on 2 September 1945 marked the endpoint for recorded deaths counted during the Battle of Okinawa, which began with the American landings in the Kerama Islands on 26 March 1945.
Image source: Surrender of Japan
Mar 28, 1945
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On 28 March 1945, following the landing of US troops, 394 civilians on Tokashiki island were forced by Japanese soldiers to kill themselves, one of the most tragic episodes of the Battle of Okinawa.
Image source: Battle of Okinawa
Jan 1, 2007
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In 2007, Ryūkyū Shimpō, one of the two major Okinawan newspapers, wrote: 'There are many Okinawans who have testified that the Japanese Army directed them to commit suicide,' defending survivors' accounts against revision efforts.
Image source: Ryūkyū Shimpō
Mar 1, 2007
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In March 2007, the national Ministry of Education, Culture, Sports, Science and Technology (MEXT) advised textbook publishers to reword descriptions that the embattled Imperial Japanese Army forced civilians to kill themselves in the war to avoid being taken prisoner.
Sep 29, 2007
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On 29 September 2007, about 110,000 people held the biggest political rally in the history of Okinawa to demand that MEXT retract its order to textbook publishers regarding revising the account of the civilian suicides.
Dec 1, 2007
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The resolution stated it is 'an undeniable fact that the multiple suicides would not have occurred without the involvement of the Japanese military' and that any deletion or revision is a denial and distortion of survivors' testimonies. In December 2007, MEXT partially admitted the role of the Japanese military in civilian mass suicides.
Jan 1, 2008
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At a court hearing, Ōe testified that 'mass suicides were forced on Okinawa islanders under Japan's hierarchical social structure that ran through the state of Japan, the Japanese armed forces and local garrisons.'
Image source: Kenzaburō Ōe
Mar 1, 2008
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In March 2008, the Osaka Prefecture Court ruled in favor of Ōe, stating, 'It can be said the military was deeply involved in the mass suicides,' formally recognizing the military's role in the murder-suicides.
Mar 1, 2008
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The Osaka Prefecture Court cited testimony about the distribution of grenades for suicide by soldiers, noting that mass suicides were not recorded on islands where the military was not stationed, as evidence of military involvement.
Jan 1, 2012
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In 2012, Korean-Japanese director Pak Su-nam announced her work on the documentary Nuchigafu (Okinawan for 'only if one is alive'), collecting living survivors' accounts to show 'the truth of history to many people'.
Jan 1, 2012
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Pak Su-nam alleged that 'there were two types of orders for honorable deaths—one for residents to kill each other and the other for the military to kill all residents', highlighting the coercive role of the Japanese military.
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