The CTOE - Centro de Tropas de Operações Especiais (Special Operations Troops Centre), based in Lamego, is a unit of the Portuguese Army with the mission of instructing troops in unconventional warfare and counter-terrorism. Until 2006, it was known as CIOE - Centro de Instrução de Operações Especiais (Special Operations Instruction Centre). The CTOE contains an operational unit called DOE - Destacamento de Operações Especiais (Special Operations Detachment), popularly known as Rangers, tasked with performing missions similar to the US Army's Delta Force or British Special Air Service. Some of these missions include conducting long-range reconnaissance patrols, raids against high-value targets and enemy bases or hideouts, hostage rescue, covert operations, guerrilla warfare, locating enemy command and control centres, targeting and destruction of enemy air defences and radar systems, and POW rescue operations. The unit can be infiltrated by parachute, helicopter, small boat, or by foot. History The CTOE, heir of the historical traditions of Regimento de Infantaria 9 (9th Infantry Regiment), was created on 16 April 1960 to form units specialised in counter-guerrilla operations, psychological operations, and mountaineering. These special, light-infantry units were called Caçadores Especiais (Special Hunters; the regular army light-infantry units were just called Hunters) and were the first units in the Portuguese Army to wear a beret (brown) and camouflage. They were elite units, with highly motivated, hand-picked personnel, whose instructors had taken courses on counter-insurgency and counter-guerrilla operations in France, Algeria, the United States, the United Kingdom, and Spain. When the Portuguese Colonial War began in 1961, there were already four companies of Special Hunters in Angola. Early in the fighting, the Caçadores Especiais received updated 7,62 mm NATO small arms such as the Espingarda m/961 (Heckler & Koch G3) and the FN/German G1 FAL rifle (known as the m/962); the FAL was a favored weapon of the Caçadores Especiais due to its lighter weight and better practical accuracy compared to the m/961 G3. The 4th Company Caçadores Especiais in particular was a very active one (their website contains many photos and detailed mission chronology, ). Still, by the end of 1961, the Special Hunters had been disbanded: some of their training was incorporated into the instruction of the regular army Hunter companies, and the brown beret and camouflage spread to the whole Army. The CTOE remained, now tasked with giving their courses to officers and NCOs, and to form commando troops. After the creation of