Abstract ~~Circumcision among the Maasai and Borana. Warfare, Procreation and Virility in East Africa. ~~— In Maasailand as well as among the Borana, two respectively Nilotic and Cushitic ethnie groups who have made major contributions to East Africa's cultural heritage, circumcision basically "unveils" men's virility at a crucial moment in their lives. It is rituaily "pre-" and "post-enacted" a number of times during the course of the elaborate process of "masculinisation" through which ail groups of men belonging to a new age set must pass. Given its critical importance, circumcision culturally carries a range of cultural meanings. Some of these are specifie to each ethnie group, a fact which is understandable since, among other things, Maasai and Borana men are not "initiated" at the same stage in their lives.