From a military perspective the Portuguese had enjoyed a relatively successful war, employing anti-guerilla tactics and heavily recruiting Africans, including a group of Katangese rebels who were exiled in Angola after unsuccessfully trying to create an independent state in southeast Zaire in the late-60s.  By the end of the liberation war three times as many African soldiers served in the Portuguese military as in the various guerilla armies.  Revolutionary events in Portugal itself would however change the situation in Angola.