1961 , with the beginning of the colonial wars in its overseas territories .
Portugal had begun to incorporate black Portuguese Africans in the war effort in Angola , Portuguese Guinea , and Portuguese Mozambique based on concepts of multi-racialism and preservation of the empire .
Since 1961 , with the beginning of the colonial wars in its overseas territories , Portugal had begun to incorporate black Portuguese Africans in the war effort in Angola , Portuguese Guinea , and Portuguese Mozambique based on concepts of multi-racialism and preservation of the empire .