SAN JUAN, Puerto Rico -- Lt. John R. Wasson beckoned to his men from the enemy's side of the river. Night was falling over North Korea's Chorwon Valley, and Company L of the 65th Infantry Regiment, ordered into the darkness to track down and kill Chinese soldiers, had made it perhaps 2 miles into the no-man's land between the U.N. line and the communists. Wasson, an officer fresh out of West Point, had crossed the river alone to reconnoiter the rocky scrub on the other side. Now, he was signaling his troops to follow. The men of Company L paused....