German mercenary Rolf Steiner during his service as commander of the 4th Biafran Commando Brigade, Nigerian Civil War, 1968. A famous legionnaire who served in Algeria and Vietnam, Steiner became a Biafran citizen and refused to take pay while leading the 4th Commandos, believing it a noble cause.
General Yakubu "Jack" Dan-Yumma Gowon (born 19 October 1934) was the head of state (Head of the Federal Military Government) of Nigeria from 1966 to 1975. He took power after one military coup d'état and was overthrown in another. During his rule, the Nigerian government successfully prevented Biafran secession during the 1967–70 Nigerian Civil War.