The Italian campaign in East Africa was initially more successful, as the Italians captured British Somaliland and small parts of Sudan and Kenya, but lack of fuel and resources then forced them to abandon any further intent of advance and take up a defensive posture against an expected counterattack. This counterattack came from two Indian divisions from Sudan, three divisions from Kenya and an amphibious attack from Aden, in co-operation with Ethiopian "Arbegnoch" rebels. The Allied forces captured Somalia in February, Eritrea in March–April (after the decisive Battle of Keren), and Addis Ababa, capital of Ethiopia, in April. The Duke of Aosta, viceroy of Italian East Africa, surrendered at Amba Alagi in May. Forces in Italian East Africa were somewhat cut short by the Regia Aeronautica's forced presence in the Battle of Britain at the time, leaving only 150 planes in Ethiopia, as well by the impossibility of receiving supplies from Italy. Some Italian garrisons, such as Gondar and Culqualber, held out till November 1941, and a small number of Italians waged a guerrilla war for some more time, some continuing till 1943.