The Professionals (1966)

Factual error: In the scene where Lee Marvin states that Burt Lancaster loves explosions, Burt Lancaster makes a remark about the big bang theory. He says: the whole universe started with a big explosion. The film is set in 1917 which is 10 years before Georges Lemaître launched the big bang theory.

J.W. Grant: You bastard.
Rico: Yes sir. In my case an accident of birth. But you, you're a self-made man.