G.I. Samurai

aka Time Slip, 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. Plot During a defensive exercise, a wildly mixed group of Japanese SDF forces with a tank, an APC, a patrol boat and a helicopter suddenly find themselves stranded 400 years in the past through a sudden time slip effect 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 SDF weaponry in action, Kagetora persuades Iba to aid him in his struggle for supremacy in feudal Japan. In the meantime, however, Iba finds himself faced with the desperation of his men who want to return to their own time. Some make contact with the locals – one, Private First Class Mimura, even finds himself a consort who keeps following him – whilst others freak out, running away in a desperate attempt to return home, or rebelling against rules and restrictions and try to live as pirates. Finally, his force shrunk from 21 men to 11, Iba manages to calm his troops by telling them that by fighting history and thus creating a time paradox they might be able to return home. Iba joins Kagetora and fights by his side. Finally, Iba and the members face Takeda Shingen's forces in battle. But their trust in their advanced weaponry costs them dearly: Shingen's forces outmanoeuvre them at every turn, the soldiers lose all their vehicles and major weapons, and five of them die on the battlefield. In a desperate attempt, Iba forces his way to Shingen's command post and kills him in a sword duel.