The Army of Africa included indigenous Arab or Berber volunteers; (spahis, Goumiers and tirailleurs); regiments largely made up of pied-noir French settlers doing their military service (zouaves and chasseurs d'Afrique); and non-French volunteers (French Foreign Legion). The divisions were not absolute and (for example) volunteers or conscripts from mainland France might choose to serve with the Muslim rank and file of the spahis and tirailleurs, while Arab volunteers might appear amongst the ranks of the zouaves. Prior to World War I, one battalion of each of the four zouave regiments then in existence, was recruited in France.[1] These battalions' bases were thereby providing a framework that could be expanded in the event of general mobilisation, and which were physically located closer to the geographical threat of Germany.[2]