Doraemon: Nobita and the Steel Troops is a 1986 Japanese animated science fiction action-adventure film based on the seventh volume of the same name of the Doraemon Long Stories series. The original plot was written by Fujiko F. Fujio. Alternate titles include The Platoon of Iron Men, or The Robot Army. The film pays homage to many anime series featuring giant robots or "mecha", most notably Gundam and Mazinger. It is the seventh Doraemon film.