"Milocas", "Licas", and "Gina" by their crews – in northern Angola, which served with the 1927th Cavalry Battalion commanded by Cavalry Major João Mendes Paulo, stationed at Nambuangongo. The vehicles were mostly employed for convoy escort and recovery duties, and limited counterinsurgency operations against National Liberation Front of Angola (FNLA) guerrillas, who dubbed them "Elefante Dundum”. "Milocas" was destroyed by an accidental fire in 1969, while "Gina" and "Licas" were withdrawn from active service in 1972, the former being sent to Luanda and the latter ended up in 1973 as an airfield security pillbox in the Portuguese Air Force's Zala airfield. Period photographs show some modifications to the basic design, namely the omission of the bow machine gun, re-installed on a pintle mount in the roof of the turret, and a small searchlight fitted in front of the commander's cupola. During the four-day long Football War of 1969, El Salvador invaded Honduras in an all-out-war strike using the M3 Stuart as the main battle tank. El Salvador captured eight major cities before the Organization of American States arranged a ceasefire. The South African Armoured Corps continued to use M3A1s in a reserve role until 1955. Some were refurbished locally in 1962 and remained in service as late as 1964. The fleet was withdrawn in 1968, owing to parts shortage. The M3 Stuart is still on the active list in the Armed Forces of Paraguay, with ten of the tanks being overhauled in 2014 to provide a training capability. Variants US variants M3 (British designation "Stuart I") 5,811 vehicles were produced. 1,285 M3s had Guiberson diesel installed and were called "Stuart II" by British. Late production M3s were fitted with turret developed for M3A1, though without turret basket. These tanks were dubbed "Stuart Hybrid". M3A1 (Stuart III) 4,621 were produced from May 1942 to February 1943. New turret with turret basket and no cupola. Gun vertical stabilizer installed. Sponson machine guns were removed. 211 M3A1s with Guiberson diesel were called "Stuart IV" by British. M3A3 (Stuart V) 3,427 produced. Put into production to integrate hull improvements brought by the M5 into the M3 series. Turret with rear overhang to house SCR-508 radio. Welded hull with sloped armor, 20° in from the vertical, on front and sides. M5 (no British designation) 2,074 produced. Twin Cadillac engines. Redesigned hull similar to M3A3, but with vertical sides and raised engine deck. Turret as for