Full Metal Jacket is a 1987 war film directed by Stanley Kubrick. It follows a platoon of U.S. Marines through their training and the experiences of two of the platoon's members in the Tet Offensive during the Vietnam War. The term 'Full Metal Jacket' refers to the type of ammunition used by the soldiers, which is encased in a metal shell. The crossword solution for this term is ARMOR, which is a protective covering made of metal or other strong material.