Caesar: I did not start this war. I offered you peace. I showed you mercy. But now you're here. To finish us off... for good.
When the bald soldier gets into the cage of the apes the amount of mud on his face changes between shots.
In the opening scene, one of the soldiers has "Bedtime for Bonzo" written on his helmet. This is a reference to the film with Ronald Reagan about an intelligent chimp.