本間雅晴
On 24 September 1945, with the war over, MacArthur ordered Styer "to appoint military commissions for the trial of such persons accused of war crimes". To try General Tomoyuki Yamashita, Styer appointed a commission of five general officers: Major Generals Russel B. Reynolds, Leo Donovan and James A. Lester, and Brigadier Generals Morris C. Harwerk and Egbert F. Bullens. Styer had the authority to reduce the sentence handed down by the commission, but he upheld the commission's death sentence on 12 December. The sentence was upheld by the Supreme Court of the United States. On 22 February 1946, Styer signed the order for Yamashita's execution, which took place the following morning. General Masaharu Homma, the Japanese conqueror of Bataan and Corregidor, was subsequently also tried and convicted of war crimes committed by his troops during the notorious Bataan Death March, and Styer signed Homma's execution order too.