A history of the U.S. involvement in the Korean War.American soldiers camped in snowy woods. Two soliders start a fire. A shirtless soldier washes his face. A solider writes a letter. Soliders cook food, drink coffee, and socialize. American soliders walking down a snow-covered road. LS of the soliders and jeeps on the road. Soliders riding on the outside of a tank. Operation Killer: Soliders firing rifles and machines guns from behind hills, tanks firing cannons. troops walking up a hill, soliders firing mortars and rockets. Soliders sleeping on the ground. Soliders crawl through the mud. CU of an alert solider. Footage of battle superimposed over a pan of a topographical map of Korea, ending with a shot of a sign reading "Seoul Off Limits.