Military Units to Aid Production or UMAPs (Unidades Militares de Ayuda a la Producción) were agricultural concentration camps operated by the Cuban government from November 1965 to July 1968 in the province of Camagüey. The UMAP camps served as a form of forced labor for Cubans who could not serve in the military due to being, conscientious objectors, Christians and other religious people, homosexuals, or political enemies of Fidel Castro or his communist revolution. The language used in the title can be misleading, as pointed by historian Abel Sierra Madero, "The hybrid structure of work camps come military units served to camouflage the true objectives of the recruitment effort and to distance the UMAPs from the legacy of forced labor." There is no official account of the internships of the UMAP's, but it has been estimated that the majority of the servicemen were conscientious objectors.