Nowa Omoigui wrote extensively about key events about Nigeria's history and Military coups in Nigeria: the 1966 Nigerian coup d'état, the Nigerian counter-coup of 1966, the Nigerian Palace Coup of 1975, the abortive 13 February 1976 coup, the Nigerian Military Coup of 31 December 1983, the palace coup of 1985, the Vatsa Coup Conspiracy of 1985, The Gideon Orkar Coup of 1990 among many others.