"To Take Some of That Fear Away": Task Cohesion and Combat Effectiveness Among Combined Action Platoons in Vietnam, 1965–71

Abstract:Marine Combined Action Platoons (CAP) during the Vietnam War offer a unique lens through which to explore what makes a body of disparate individuals unify into an effective fighting force. How did small units with virtually no supervision coalesce into cohesive and lethal military organizations, and how did they maintain focus on helping villagers while repeatedly battling irregular enemy forces, most of whom were indistinguishable from the local populace? This article posits that living among the South Vietnamese and fighting at the village level fostered a personal attachment to the war that did not exist among American servicemembers elsewhere. CAP Marines maintained higher levels of task cohesion than their non-CAP counterparts, ensuring that they often remained effective fighting forces until the program's termination in 1971.