Heaven Knows, Mr. Allison.

U.S. Marine Corporal Allison (Robert Mitchum) and Sister Angela (Deborah Kerr) are stranded on an island in the South Pacific in 1944. They are forced to hide in a cave after a Japanese attack on the island. Allison sabotages the enemy's guns by removing their breechblocks, saving many American lives. After being found, Marines carry Allison on a stretcher to the ship with Sister Angela walking beside him.