11 – The cast of Saving Private Ryan actually went through boot camp.
Saving Private Ryan is the epic World War II film, from 1998 and directed by Steven Spielberg, in which a crew of American soldiers fights to save the last of four brothers, the three others having already been killed in the war.
To make the movie as realistic as possible, a feat for which the popular film is known, the entire cast of Saving Private Ryan attended boot camp led by retired U.S. marines. All except one star that is. Matt Damon did not have to attend boot camp, all so the real life actors would be as resentful of him as their characters were supposed to be.