The African development and governance picture is today highly differentiated with some countries developing successful democracies while riding a wave of growth, others facing outright institutional failure, and a great number in-between. Critical to understanding the different paths that countries have taken, and the likely even greater divergences in the future, is the relationship between civilians and soldiers. Starting soon after independence in the early 1960s, the seizure of power by soldiers was emblematic of the problems African states faced in promoting good governance. Now, at a time when most soldiers are back in their barracks, economic growth has accelerated and democratization has progressed. However, the picture varies greatly from country-to-country. In this paper, we develop a taxonomy of African militaries to understand why some countries have better civil-military relations than others, what is the likely path in the future, and the potential role, if any, for outsiders. African militaries are characterised, just as African states themselves, by different capacities and civil-military records