Especially when the Germans are disarmed and can't in any way defend their village or their women and girls.
Unless you're missing both arms, you are never disarmed enough to allow what happened to that woman to go unavenged. I live in a city and could have a club in hand in the next 5 minutes. No knives in the kitchen drawer? No empty bottles and "petrol" stations. No rocks or crowbars or hammers or lug wrenches? Maybe their brains are disarmed.