Field Manual (FM) 3-24/ Marine Corps Warfighting Publication (MCWP) 3-33.5 provides doctrine for Army and Marine units that are countering an insurgency. It provides a doctrinal foundation for counterinsurgency. FM 3-24/MCWP 3-33.5 is a guide for units fighting or training for counterinsurgency operations. The principal audience for FM 3-24/MCWP 3-33.5 is battalion, brigade, and regimental commanders and their staffs. Commanders and staffs of Army and Marine Corps headquarters serving as joint task force or multinational headquarters should also refer to applicable joint or multinational doctrine concerning the range of military operations and joint or multinational forces. Trainers and educators throughout the Army and Marine Corps will also use this publication