Great choice Rusty. I would suggest a few others too.
The Fury- Watch the greatest generation take on Panthers with their Shermin death traps.
Tora! Tora! Tora! - Watch a sneak attack on a military that was not prepared do to cost savings. We had torpedos that did not work and anti-aircraft amunition that were 50% duds.
Saving Private Ryan - Try to imagine what it was like to take Omaha Beach.
Or you could read a book. I would suggest E.B. Sledge's With The Old Breed: Peleliu and Okinawa. This is the greatest battlefield memoir ever written.