U.S. Marines from the Nevada Battles to the Armistice: Outpost War

When 1953 began, the Jamestown Line had become, in the words of Marine Corporal Robert Hall who fought there, “a messy, rambling series of ditches five to seven
feet deep” that linked a succession of bunkers constructed of sandbags and timber and used for shelter or fighting. The trenches wandered erratically to prevent
Chinese attackers who penetrated the perimeter from delivering deadly enfilade fire along lengthy, straight segments. As for the bunkers themselves, since “piles
of trash, ration cans, scrap paper, and protruding stove pipes” revealed their location, the enemy “must have known where every bunker was.”