Revealing mistake: Blank .30 caliber machine gun bullets are obvious as the soldier with Little John sets up and loads the weapon.
Continuity mistake: Long shots of the German sergeant shows his MP38/40 submachine gun at his waist and pointed down, but the close up shots of him show the weapon up by his chest, pointed up.
Revealing mistake: The German MP38/40 submachineguns have blank firing adapters on their barrels.
Revealing mistake: Blanks loaded in the German MG42 are obvious as the American tank assaults its position.
Other mistake: When Saunders is talking to Reiser, he calls him Rogers - the actor's real name.