[1] After their training in China in 1965, the first military cadres returned to Angola, settled in the eastern part of the country and began the mobilization and recruitment of guerrillas.

This enabled them to begin the mission of liberating the country from Portuguese colonialism, as proved by the attacks of 4 and 25 December 1966 on Kassamba and Teixeira de Sousa respectively.

FALA became very effective, causing the enemy to suffer many defeats, expanding the guerrilla zones and consolidating the liberated areas—a force that the Portuguese colonialists could not ignore.

The People's Movement for the Liberation of Angola (MPLA), through the Cubans, violated the Alvor agreement, opting for the seizure of power through the use of arms.

In 1980, the expansion of semi-regular battalions gave new vigour to the armed struggle, leading to capturing new territories and the consolidation of those that had already been conquered.

In 1982 the Fifth Congress was held, which drew up a new strategy for FALA, including the formation of military columns and compact guerrilla units at the level of all politico-military fronts.