Re, I looked for that when we had a thread running on war crimes, and couldnt find it.
And while it was "not official policy" for Allied personnel to take no prisoners, "over wide reaches of the Asian battleground it was everyday practice".[74]
On 4 March 1943, during the Battle of the Bismarck Sea, General George Kenney ordered Allied patrol boats and aircraft to attack Japanese rescue vessels, as well as the survivors from the sunken vessels on life rafts and swimming or floating in the sea. This was later justified on the grounds that rescued servicemen would have been rapidly landed at their military destination and promptly returned to active service.[75] These orders violated the Hague Convention of 1907, which banned the killing of shipwreck survivors under any circumstances.[76]
And
Laconia massacre: US aircraft attacking Germans rescuing the sinking British troopship in the Atlantic Ocean. For example, the pilots of a United States Army Air Forces (USAAF) B-24 Liberator bomber, despite knowing the U-boat's location, intentions, and the presence of British seamen, killed dozens of Laconia's survivors with bombs and strafing attacks, forcing U-156 to cast their remaining survivors into the sea and crash dive to avoid being destroyed.
Some war crimes involving Allied personnel were investigated by the Allied powers and led in some instances to courts-martial. Some incidents alleged by historians to have been crimes under the law of war in operation at the time were, for a variety of reasons, not investigated by the Allied powers during the war, or were investigated and a decision was taken not to prosecute.
