The Laha Massacre was a war crime committed by Japan after the Battle of Ambon against Australian and Dutch forces in Indonesia.
From Wikipedia:
"Allied casualties in the battle were relatively light. However, at intervals for a fortnight after the surrender, IJN personnel chose more than 300 Australian and Dutch prisoners of war at random and summarily executed them, at or near Laha airfield. In part, this was revenge for the sinking of the Japanese minesweeper, as some surviving crew of the minesweeper took part.
According to an Australian War Memorial principal historian, Dr Peter Stanley, over the following three and a half years, the surviving POWs:
...suffered an ordeal and a death rate second only to the horrors of Sandakan, first on Ambon and then after many were sent to the island of Hainan [China] late in 1942. Three-quarters of the Australians captured on Ambon died before the war's end. Of the 582 who remained on Ambon 405 died. They died of overwork, malnutrition, disease and one of the most brutal regimes among camps in which bashings were routine.
In 1946, incidents which followed the fall of Ambon became the subject of one of the largest ever war crimes trials: 93 Japanese personnel were tried by an Australian military tribunal at Ambon. Rear Admiral Hatakeyama was found to have ordered the Laha massacres, however he died before he could be tried. Commander Kunito Hatakeyama, who was in direct command of the massacres, was sentenced to execution by hanging."
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