Kaúlza de Oliveira de Arriaga, OA, GCC, OC, OIH was a Portuguese general, writer, professor and politician. He was Secretary of State of the Air Force between 1953 and 1955 and commander of the Terres

Operation Gordian Knot was the largest and most expensive Portuguese military campaign in the Portuguese overseas province of Mozambique, East Africa. The operation was carried out in 1970, during the