On March 29, 1982, the first "COE – Curso de Operações Especiais" (Special Operations Course) began (not to be mistaken with CTOE's COE). The course ended on November 18 of the same year; the unit was considered to be totally operational and with an intervention capability since the end of 1982, although it was formally created in 1979. As a result of that approach between the British SAS and the Portuguese GOE, the pictures of the first agents are hard to distinguish between British and Portuguese since their uniforms, equipment and weaponry are identical. Later, GOE, still maintaining a strong relationship with the SAS, also began training with the US Delta Force, Germany's GSG 9, Spain's Guardia Civil Anti-Terrorist units, Ireland's Garda ERU, and Israeli Anti-Terrorist units. GOE is also part of the European ATLAS Network.