This publication in the Center for Military History Historical Analysis Series addresses the American role in the Philippine Hukbalahap Insurrection. Brought to the verge of collapse by a wide-spread Communist-inspired insurgency, the government of the Philippines, supported by limited U.S. aid, advice, and assistance, virtually eliminated Huk resistance by 1955. This study examines this remarkable achievement and demonstrates how efforts of uniquely qualified individuals, combined with American foreign policy initiatives and international events, prevented the collapse of an important allied nation. Published originally in 1987 by the Research and Analysis Division's Special Studies Series, The Hukbalahap Insurrection has received wide acclaim and sufficient attention to warrant wider distribution. Reprinted in its entirety, it provides contemporary planners with insights and observations that remain as valid today as when American and Filipino officials combined their efforts to defeat the well-organized Huk insurgency.