Samurai Commando: Mission 1549, known in Japan as Sengoku Self-Defense Forces 1549 (戦国自衛隊1549 Sengoku Jieitai 1549), is a 2005 Japanese feature-length film and manga series focusing on the adventures of a modern-day Japan Ground Self-Defense Force (JGSDF) element that accidentally travels through time to the Warring States period of Japanese history. Both the film and manga are based on Sengoku Jieitai (aka "Time-Slip", "GI Samurai", 1979), an action film which starred Sonny Chiba as the leader of a JGSDF platoon sent back to feudal Japan.