Initially, the KAR was deployed as the 1st East African Infantry Brigade and the 2nd East African Infantry Brigade. The first brigade was responsible for coastal defence and the second for the defence of the interior. (See 1st SA Infantry Division). By the end of July 1940, two additional East African brigades were formed, the 3rd East African Infantry Brigade and the 6th East African Infantry Brigade. Initially a Coastal Division and a Northern Frontier District Division were planned, but, instead, the 11th African Division and the 12th African Division was formed.