During the scene with the gun fight at the farmhouse, you'll notice that at one moment, the biggest Russian with the machine gun is holding an MG34, which he had had since he landed, and the next moment, apparently only when he is shooting, it is an MG42. It continues to switch back and forth from an MG34 (round barrel with holes in it) to an MG42 (larger rectangular barrel with slits in the side). At one point, you can see a curved cartridge hanging from the bottom of the MG42, a feature not found on such weapons.