When Irwin is punished by being forced to move a huge pile of rocks, Robert Redford was offered fake featherweight props, but he chose to carry actual rocks to make it more realistic.
Originally, Col. Winter (James Gandolfini) was supposed to smoke cigars. Gandolfini pleaded with director Rod Lurie to drop the idea because he felt smoking cigars would remind audiences too much of Tony Soprano, his star-making role in The Sopranos (1999).
A few minutes after the office of Col. Winters is set afire and then extinguished by the sprinkler system, Winters examines the damage and there is no smoke or steam rising from the debris.
During the prison uprising when the Colonel is staring out his window, the reflection shows all the inmates standing to attention as opposed to fighting the guards.
General Irwin and Yates were portraying military academy graduates. Graduates of a military academy generally wear their academy rings on the left hand.
Irwin: We can no long wear the uniform of the soldier. We forfeited that right and that includes me. I disobeyed an executive order, I violated my duty as a commanding officer. And eight men paid a catastrophic price. It's a mistake not easy to live with. So here I am just like you, a convicted criminal. Only difference between you and me is, I know I'm guilty.
Winter: See, I too share the burden of command. You may not think that I've ever set foot on a battlefield, but that's because you've never sat behind this desk. This desk! My men and I are vastly outnumbered. We spend every day behind enemy lines because, make no mistake about it, Mr. Irwin, they are the enemy! But then, I don't have to justify myself to YOU, do I, Mr. Irwin?