Complex sentence: From 1965 to 1967, Buhari served as Commander of the Second Infantry Battalion and appointed Brigade Major, Second Sector, First Infantry Division, April 1967 to July 1967.
Split into simpler sentences: From 1965 to 1967, Buhari served as Commander of the Second Infantry Battalion. He was appointed Brigade Major, Second Sector, First Infantry Division, April 1967 to July 1967.