This thread is dedicated to all the times that movies tried to get away with tanks painted up from the wrong country or really bad vismods.     I'll start it off with this youtube clip from the film The Battle Of Neretva."  It's not in English, but from what I can tell, it's about German forces equipped with T-34s and M4 Shermans fighting Soviet forces equipped with Pak 38 and Pak 40 anti-tank guns.