Book excerpt: Vietnam was the US Special Forces most complex and controversial mission, one that began in 1957 and ended in 1973. Camp strike forces, mobile strike forces, mobile guerrilla forces, special reconnaissance projects, training missions and headquarters duty provided vastly differing experiences and circumstances for SF soldiers. Other fluctuating factors were the terrain, the weather and the shifting course of the war itself. Gordon Rottman examines the training, life, weapons and combat experiences of the Special Forces soldier in this challenging environment.