Dervish State employed cavalry in their battles against the imperialist European powers during the Campaign of the Sultanates. In Italian Somaliland, eight "Arab-Somali" infantry battalions, the Ascari, and several irregular units of Italian officered dubats were established. These units served as frontier guards and police. There were also Somali artillery and zaptié (carabinieri) units forming part of the Italian Royal Corps of Colonial Troops from 1889 to 1941. Between 1911 and 1912, over 1,000 Somalis from Mogadishu served as combat units along with Eritrean and Italian soldiers in the Italo-Turkish War. Most of the troops stationed never returned home until they were transferred back to Italian Somaliland in preparation for the invasion of Ethiopia in 1935. In 1914, the Somaliland Camel Corps was formed in British Somaliland and saw service before, during, and after the Italian invasion of the territory during World War II. 1960 to 1978 Just prior to independence in 1960, the Trust Territory of Somalia established a national army to defend the nascent Somali Republic's borders. A law to that effect was passed on 6 April 1960. Thus the Somali Police Force's Mobile Group (Darawishta Poliska or Darawishta) was formed. 12 April 1960 has since been marked as Armed Forces Day. British Somaliland became independent on 26 June 1960 as the State of Somaliland, and the Trust Territory of Somalia (the former Italian Somaliland) followed suit five days later. On 1 July 1960, the two territories united to form the Somali Republic. After independence, the Darawishta merged with the former British Somaliland Scouts to form the 5,000 strong Somali National Army. The new military's first commander was Colonel Daud Abdulle Hirsi, a former officer in the British military administration's police force, the Somalia Gendarmerie. Officers were trained in the United Kingdom, Egypt and Italy. Despite the social and economic benefits associated with military service, the armed forces began to suffer chronic manpower shortages only a few years after independence. Merging British and Italian Somaliland caused political controversy. The distribution of power between the two regions and among the major clans in both areas was a bone of contention. In December 1961, a group of British-trained northern non-commissioned officers in Hargeisa revolted after southern officers took command of their units. The rebellion was put down by other northern Noncommissioned officers (NCOs), although dissatisfaction in the north lingered. Adam notes that in the aftermath of this mutiny, first armed