Sonny Chiba delivers an excellent performance in this movie that pits modern weapons against the formidable swords and strategic brilliance of the war lords from ancient Japan. I saw this movie first as a teenager in Germany and it was shown under the title Time Slip. I searched for many years until I found it again as G.I. Samurai. I purchased the DVD which has the English dubbed version along with the original Japanese with English subtitles. The Japanese version has much more impact due to it's more authentic delivery of the dialogue. Some of the emotion and mannerism is lost in the dubbed version.