Concept:The "War Against Indiscipline" was a national campaign launched by a military government in Nigeria in the 1980s.Explanation:The campaign was introduced by General Muhammadu Buhari in March 1984.Its main goals were to promote discipline, orderliness, and respect for public property among Nigerians.It also encouraged good behaviour and civic responsibility in daily life.Among the options given, the correct military leader is General Muhammadu Buhari.Answer:D. General Muhammadu Buhari