The Fugitive (1963)

While working as a roller rink supervisor, Kimble is recognized by the horribly scared Joe Hallop, a former Korean War veteran whom blames Kimble for his condition. Apparently back in the Korean War, Kimble was nearly killed in an enemy grenade explosion in which Joe shielded Kimble and got his face disfigured in the process. Knocked out, Kimble never knew who saved his life. Joe then plots to lure Kimble into a remote area and kill him by using one of his war mememtos: a live grenade.