How Many Americans Were Convicted Of War Crimes in WWII?

This is clearly the case for the US and British but it does get a little messier with the Soviets.

The Red Army engaged in methodical rape of German women and girls, with estimates of up to 2 million victims, with some being raped scores of times.

The Soviets also committed other war crimes against the Axis armies and civilians as well, but both they and the Chinese did a lot of terrible things to their own people.