Saw a piece on the opera/play Appomattox, written by a Brit who was struck by Grant's terms to Lee at Appomattox. Well he might be.
But our great leaders have not always been so honorable. Apparently after the victory at Saratoga and the surrender of Burgoyne's army, the terms provided for the repatriation of the troops (not to serve in the war again). Brad DeLong links to a letter from Washington urging essentially that we violate the terms, arguing that a fast return of the troops would merely free other troops to come from Britain. (I've a personal interest, my ggggrandfather was a captain who I believe was part of the guards when the captured troops ended up in a camp near York, PA.)