Vietnam: Main force Vietcong units were uniformed, full-time soldiers, and were used to launch large scale offensives over a wide area. Regional forces were also full-time, but operated only within their own districts. When necessary, small regional units would unite for large scale attacks. If enemy pressure became too great, they would break down into smaller units and scatter. Communism was also a big part of their Military tactic.
US:They fought a hi-tech war, using B52 bombers, artillery, helicopters, napalm and defoliants (Agent Orange). This killed many innocent civilians, and failed to stop the Vietcong guerrillas.patrols went out looking for "Charlie", as they called the Vietcong. But the patrols were very visible, and easy to ambush. This led to atrocities such as "zippo raids" to burn villages, and the unprovoked massacre of peaceful villagers at My Lai in 1968.They also used a draft to force any boy as young as 18 to fight in the war against Vietnam.