We did it to Germans too after Normandy and especially liberating camps
The NVA routinely killed prisoners
As did the hessians
And Henry V
He put he cream of French noble youth as prisoners to the sword as a precaution over his baggage train
My dad said that the movie “Fury” was probably the closest to real. They killed the SS guy who was surrendering in one scene.
My father said as they went up the boot of italy in WWII that they did not keep any prisoners. He was young and was spared killing the prisoners, but he understood that when the prisoners were took, essentially behind the barn and gunshots were heard, there were exactions taking place.