G.I. Samurai

is a 1979 Japanese science fiction/action film focusing on the adventures of a modern-day Japan Ground Self-Defense Force (JGSDF) and Japan Maritime Self-Defense Force (JMSDF) team that accidentally travels in time to the . The film stars Sonny Chiba, one of the top male Japanese actors, and was based on a novel by Ryo Hanmura, a well-known writer of historical novels and science fiction. A remake was theatrically released in Japan in 2005 under the title Samurai Commando: Mission 1549.


During a defensing exercise, a wildly mixed group of Japanese SDF members with a tank, an APC, a patrol boat and a helicopter suddenly find themselves stranded 400 years in the past and under attack by samurai forces. Their acting commanding officer, Second Lieutenant Yoshiaki Iba, befriends and joins forces with Nagao Kagetora, the war leader of lord Koizumi. Seeing the stranded members' defensing machinery in action, Kagetora persuades Iba to aid him in his struggle for supremacy in feudal Japan.