Flags of our Fathers (Iwo Jima), Sands of Iwo Jima, Letters from Iwo Jima, Guadacanal, Gettysburg, Band of Brothers
I'd have to say the most realistic and honest was Saving Private Ryan.
Band of Brothers
The Pacific
Saving Private Ryan
Enemy at the gates
Last of the Mohicans
Full Metal Jacket
Heartbreak Ridge
Platoon
Glory
The last Samurai
Stalag 17 in 1953 with William Holden.+1 on the 'chess game' in this movie.
Tears of the Sun, Bruce Willis-1 on the premise of rescuing a foreign doctor, +1 on the team's support to the refugees
Wow, you are a little older and wiser than I thought. You gotta be close to 90 or so, by now.