The International Military Tribunal for the Far East in Tokyo tried 28 former leaders of the Empire of Japan between May 3, 1946, and November 12, 1948, sentencing seven top officials to death and 13 others to life imprisonment for World War II crimes.
The 30-month legal proceeding, known as the Tokyo Trials, brought former prime ministers, generals, ministers, and chiefs of staff before representatives from 11 nations to face charges over the deaths of millions of people across Asia and the Pacific.
Former Japanese Prime Minister Hideki Tojo, who acted as a wartime dictator and was designated as the primary Japanese war criminal, attempted to evade capture when American officers and an interpreter arrived at his country home in the autumn of 1945. After asking the interpreter why they had arrived, Tojo stepped into his office and shot himself in the chest with a pistol, but survived when the bullet passed above his heart. He spent a month recovering in a US military hospital before his transfer to Sugamo Prison, where guards saved him from a second suicide attempt by hanging in early 1947.
Following the signing of Japan's Instrument of Surrender on September 2, 1945, Allied forces occupied the country and stripped the empire of all territories conquered or annexed since the start of World War I. Japan lost more than two million military personnel during the war, while its aggression inflicted massive casualties on the populations of China, Indonesia, Korea, and the Philippines. Anatoly Nikolaev, a Soviet representative at the tribunal, noted the contrast between Tokyo's clean European center and its dirty outskirts, adding that post-war debris later spread into the city center.
The Potsdam Declaration of July 1945 established the framework for prosecuting war criminals, promising stern justice for those who mistreated prisoners of war without destroying the Japanese nation. Subsequent diplomatic negotiations between the Soviet Union, the United States, Great Britain, China, France, Australia, Canada, New Zealand, and the Netherlands created the tribunal, which India and the Philippines later joined.
In December 1945, foreign ministers meeting in Moscow agreed that all occupation measures fell under the authority of Supreme Commander for the Allied Powers General Douglas MacArthur, who had been appointed by US President Harry Truman. MacArthur ordered the removal of militarist Japanese officials, declared freedom of religion, and suspended laws restricting speech, thought, and assembly. Established on January 19, 1946, with a charter based on the Nuremberg trials, the tribunal was funded by the US government, with MacArthur selecting the judges, chief prosecutor, and general secretary.
Unlike the joint administration at Nuremberg, American authorities maintained primary control over the Tokyo proceedings, where MacArthur possessed authority to reduce sentences but not to increase them. Nikolaev recorded that occupation forces maintained strict segregation, barring Japanese citizens from American theaters and requiring Japanese trial attendees to enter through separate doors and sit in undesirable sections. Soviet jurist Mark Raginsky described the trial as an intense struggle between supporters of peace and democracy against defenders of fascist aggression.
The tribunal held jurisdiction over individual war criminals and organization members for crimes against peace committed from 1931 onward, marking the start of Japan's war with China and occupation of Manchuria. Held inside the former Imperial General Headquarters building in Tokyo, the proceedings evaluated defendants across three crime categories, holding leaders, organizers, and accomplices personally accountable regardless of official rank or superior orders.
Court Leadership and Specific Charges
Australian judge William Webb served as tribunal president, holding a decisive vote and consulting his ten fellow judicial colleagues primarily on major matters. The judicial panel included representatives from the Soviet Union, the United States, Great Britain, France, Canada, New Zealand, the Philippines, the Netherlands, India, and China, with six judges required for a quorum. Webb emphasized at the opening that all 28 defendants had directed Japanese military, industrial, legislative, and propaganda operations for over a decade, while Raginsky noted that the indictment targeted top state leaders rather than lower-level figures.
Among the primary defendants, General Iwane Matsui commanded Japanese forces during the Nanking Massacre in China, where up to 300,000 disarmed soldiers and civilians were killed and tortured. Former Foreign Minister Koki Hirota was also charged with direct responsibility for the atrocities in Nanking. US prosecutor Colonel Thomas Morrow presented evidence that Japanese forces seized, looted, bombed, and burned populated areas without declaring war, adding that Chinese prisoners of war were tied in groups and executed in mass killings.
Former War Minister Seishiro Itagaki faced charges over the torture and murder of tens of thousands of prisoners and civilians under his command in China, Korea, and Singapore, as well as his advocacy for war against the Soviet Union. Intelligence officer Kenji Doihara, who received an award from Adolf Hitler, organized the murder of the wife of former Chinese Emperor Puyi and directed attacks against Soviet forces at Lake Khasan in 1938 and Mongolian territory at Khalkhin Gol in 1939. Chinese judge Xiang Zhejun testified that Doihara devised a system using opium and narcotics as weapons to subdue the Chinese population in violation of international drug conventions.
Field Marshal Shunroku Hata commanded expeditionary forces in China that committed widespread atrocities, while publicly promoting a militarist regime and the replacement of political parties with imperial support associations. Tojo faced charges of waging aggressive war across China and the Pacific, preparing for war against the Soviet Union, and ordering the torture and killing of prisoners. Nikolaev noted that Emperor Hirohito was omitted from prosecution despite wars being waged in his name, while US authorities excluded biological weapons Unit 731 and major industrial monopoly owners to aid post-war reconstruction.
Cold War Tensions and Evidence Submission
The defendants were held at Sugamo Prison under heightened security to prevent suicides, particularly after German official Hermann Göring died by suicide in Nuremberg. Following Winston Churchill's Fulton speech, growing Cold War tensions caused US legal personnel to avoid interaction with Soviet colleagues under directives from MacArthur's headquarters. Nevertheless, the Soviet delegation brought more than 70 legal experts, prosecutors, and investigators to present evidence.
Soviet judge Ivan Zaryanov, former head of the Red Army Military Law Academy, attended court in a general's uniform while other judges wore black robes, following Politburo instructions to maximize documentation of Japanese aggression against the Soviet Union. US Chief Prosecutor Joseph Keenan led a prosecution team of over 60 lawyers, opening the evidentiary phase on June 3, 1946, by declaring the trial a battle to save civilization from destruction by militarists who treated humans as pawns. The trial opened on May 3, 1946, with nearly 1,000 spectators present in the courtroom, where Webb described the proceedings as the most important criminal trial in history.
Led by legal scholar Sergei Golunsky, the Soviet prosecution group submitted 174 documents detailing Japanese aggression dating back to the 1904-1905 Russo-Japanese War, the Russian Civil War intervention, and border sabotage. In an October 1946 speech lasting 90 minutes, Golunsky stated that Red Army victories in Manchuria forced Japanese leaders to realize they had lost the war, though none of the accused acknowledged their crimes. Golunsky added that Japanese aggression could not be understood without its historical context, noting that Japanese leaders viewed their earlier withdrawal from Soviet territory as a temporary retreat.
After Golunsky returned to Moscow, prosecutor Alexander Vasilyev took over alongside assistants Ivanov, Vramshapuh Tadevosyan, and Solomon Rozenblit, who detailed Plan Kantokuen for a joint invasion of the Soviet Far East with Nazi Germany. Prosecutors documented Japanese attacks on Soviet shipping in the Pacific, including the shelling and sinking of the steamers Krechet, Svirskoy, Perekop, and Maikop in Hong Kong in 1941, the looting of the Sergey Lazo and Simferopol, and the detention of vessels in the La Perouse Strait in 1942 and 1943.
Soviet border guard officers, including Heroes of the Soviet Union General Kuzma Grebennik, Colonel Pyotr Tereshkin, Major Ivan Chernopyatko, and Major Gilfan Batarskin, provided testimony regarding border engagements. On December 11, 1947, a seaplane carrying Chernopyatko, Batarskin, and 12 other Soviet citizens crashed in a typhoon near Askold Island off Vladivostok, prompting suspicion of Japanese sabotage intended for former Emperor Puyi, who had testified for eight days regarding aggression in China and Manchuria.
Verdicts, Executions, and Historical Impact
Several defendants died during the proceedings, including Foreign Minister Yosuke Matsuoka and Admiral Osami Nagano from natural causes, while former Prime Minister Fumimaro Konoe committed suicide prior to arrest. Nationalist ideologist Shumei Okawa feigned insanity during proceedings and struck Tojo on the head with a sandal inside the courtroom, leading to a psychiatric evaluation that removed him from the trial until his release from an asylum in 1949, where he later translated the Koran into Japanese before his death in 1957.
The tribunal adjourned to deliberate on April 16, 1948, issuing sentences between November 4 and November 12, 1948. Seven defendants were sentenced to death by hanging for preparing, launching, and waging aggressive war and violating laws of war: Kenji Doihara, Seishiro Itagaki, Heitaro Kimura, Iwane Matsui, Akira Muto, Koki Hirota, and Hideki Tojo.
MacArthur confirmed the sentences on November 22, 1948, stating he found no procedural errors to justify intervention. US Sergeant John Woods, who previously executed condemned German leaders at Nuremberg, carried out the hangings in the courtyard of Sugamo Prison on December 23, 1948.
The tribunal sentenced 16 defendants to life imprisonment, including Yoshijiro Umezu, Kuniaki Koiso, and Toshio Shiratori, who died in prison. Remaining prisoners were pardoned in 1955, including former ambassador Mamoru Shigemitsu, who was sentenced to seven years in 1948, pardoned in 1950, and later served as foreign minister, while General Teiichi Suzuki lived as a recluse until his death in 1989 at age 100. Shigenori Togo, sentenced to 20 years, died in custody. Unresolved war crime issues were later addressed at the Khabarovsk Trial.
