The naval infantry only reappeared as permanent force in 1961, with the beginning of the Colonial War. Besides the Marines School ("Escola de Fuzileiros"), two types of operational marine units were created at that time, these being the detachments of special marines (DFE, "destacamentos de fuzileiros especiais") and the companies of marines (CF, "companhias de fuzileiros"). While the DFE were designed to operate as amphibious assault units, the CF were focused in the naval patrolling and in the defense of naval ships and facilities. During this war, and up to 1975, more than 14,000 marines fought in Portuguese Guinea, Angola and Mozambique.