It's also pretty common knowledge that the Soviets and certain parts of Eastern Bloc Europe had female combatants. Looks like it'd be some form of Polish resistance or Soviet forces. We'll see what it ends up being.
We'll see, I see this as a way for BFV to distance itself away from CoD WWII and all the other WWII games. If that trailer was made with American/British soldiers again Michael Bay fighting the Germans it'd be completely indistinguishable from CoD WWII