Ranger: Behind Enemy Lines in Vietnam (Military Illustrated)The Vietnam War saw the revival of a great military tradition the Ranger. After World War II there was a Ranger training program, but actual units were usually not deployed. The fluid battlefield in Vietnam created the need for small units to screen American divisions with long range reconnaissance and ambush tactics. Known initially as "LRRPs" (Long Range Reconnaissance Patrols) these elite units were eventually centralized and given the revived