Postage stamps and postal history of the British Cameroons

The postal history of the British Cameroons falls into two essential parts: the occupation of German Kamerun by Anglo-French forces in 1915, when German Colonial stamps were issued with an overprint and surcharge; and the situation following a 1961 plebiscite, after which the former British Cameroons, today known as Ambazonia, was divided between Cameroon and Nigeria.