 At the height of his power, Hassan led 6000 troops, and by November 1918 the British administration in Somaliland was spending its entire budget trying to stop Dervish activity.The Dervish state fell in February 1920 after a British campaign led by aerial bombing.Sporadic uprisings were to occur for decades afterwards, however on a much reduced scale with improved British infrastructural spending and a more benign, less paternalistic set of public policy.