Visible crew/equipment: At the part of the movie when the Fighters capture a Nazi soldier they begin to beat him with their rifles. If you watch closely one of the fighters has a Rifle made of rubber and it bends all over the place.
Defiance (2008)
1 visible crew/equipment mistake - chronological order
Directed by: Edward Zwick
Starring: Liev Schreiber, Daniel Craig, Jamie Bell, Alexa Davalos
Factual error: The Bielski brothers go on a raid of a German post to acquire some "Ampicillin" to treat members of their refugee band who have typhus. Ampicillin is a penicillin derivative that wasn't available until the early 1960's, and in any case, typhus is properly treated with chloramphenicol or tetracycline, antibiotics of different classes from penicillin. Besides, the German didn't have penicillin of any type during World War II.
Viktor Panchenko: You are related to Bielski?
Zus Bielski: I am Bielski.
Question: What's the name of the younger girl that Aron is with throughout the movie? There's a scene of him sharing what little food he had with her, walking with her, and discovering the mass grave of bodies, and she's one of those shouting for justice when the German soldier was captured.