Political map of Sub-Saharan Africa 12 September 1914 (Opening Shots in Africa): With the onset of World War I, the French and British moved swiftly to occupy German Togoland (Togoland Campaign) and, less successfully, to invade German Kamerun (Kamerun Campaign). Meanwhile the Germans launched their own small offensive, crossing from German East Africa into the British East Africa Protectorate (East African Campaign (World War I)).