Keith B. Bickel challenges a host of military and strategic theories that treat particular bureaucratic structures, large organizations, and elites as the progenitors of doctrine. This timely study of how the military draws lessons from interventions focuses on the overlooked role that mid-level combat officers play in creating military doctrine. Mars Learning closely evaluates Marine civil and military pacification operations in Haiti, the Dominican Republic, and Nicaragua, and illuminates the debates surrounding the development of Marine Corps' small wars doctrine between 1915 and...