A Sky News visual investigation shows a building in Deir al Balah was hit one day after civilians were told they could flee to the city. Israel says it struck military targets in the area that day. The UN told Sky News that such strikes had "no rationale".
He paid for the entire movie himself, as no producers would make anything that would depict Germany as bad due to Germany being a big market for American movies. Behind the bastards podcast has a great episode on Hollywood and Nazis.