Continuity mistake: During the roller skate rag number, Barbara Streisand falls and her curls in the back of her wig become loose, and when she stands up they are perfect.
Continuity mistake: When Gregor and Willie are attacked by the German convoy, they pick up two discarded StG 44s, but in th next scene they are firing AK-47s which had not yet been invented. After the battle, they are again carrying StG 44s.