Wish I could say it was Patton, 2001, or some other classic of the day but it was actually Conquest of the Planet of the Apes - just noticed now it was directed by J. Lee Thompson of Guns of Navarone fame. 

I saw it on TV a month or two ago ... wasn't too bad either.  I'm not planning to see the one in the theaters right now but they look fairly similar plot-wise.