-can they fight from buildings, if so how is position handeled? who gets the window, or is it abstract.
Yes, in windows and holes
-ammo can soldiers scrounge or vacuum up ammo from the dead if they run out.
Soldiers can take up "best" arms, grenades and carry ammunition for machine guns, mortars and cannons.
In full version or english demo, not in russian demo
-are there flame throwers, bazooka satchel charges?
flame throwers, flame tanks, pzb39 and gnb39
But bazooka's it's a Western front, Kharkov 1943 it's Eastern