Corps was established on the basis of the former 59th Army Corps. In January 1994, the 108th Motorized Rifle Division was disbanded, and its military units were incorporated into the 1st Army Corps. Disbanded regiments were replaced by motorized infantry, mountain artillery, tank, and anti-aircraft artillery brigades. In April 1994, departments of defense were introduced in the regions of the republic, the Republic of Karakalpakstan and the city of Tashkent, and departments of defense in cities and districts. Military reforms were implemented after the appointment of civilian Kadyr Gulyamov to the defence ministry. Soviet-style regimental structures, were replaced, with the basic fighting unit consisting of 14 soldiers. "Ranger" detachments based on the American model were also formed. Since Shavkat Mirziyoyev came to power, the military has been involved in re-arming its military with modern equipment. Activities and foreign relations From August to September 1997, Uzbekistan took part in the exercises of the Central Asian Battalion (CENTRASBAT) in Kazakhstan and Uzbekistan. as part of an eight nation joint exercise which include the United States, Russia and Ukraine. After the September 11, 2001 attacks, the United States leased the Karshi-Khanabad airbase in southern Uzbekistan, which borders Afghanistan. The American base there was called "Camp Stronghold Freedom," yet was more often referred to as "K2 Airbase" by the personnel in theater. In May 2005, the military was involved in suppressing unrest in the Ferghana Valley city of Andijan, which became known as the Andijan massacre. Consequently, the EU banned arms sales and imposed a one-year visa ban on 12 senior officials, including the security chief and interior and defence ministers, accusing them of bearing responsibility for the killings. In the aftermath of the incident, President Karimov dismissed several senior military figures: Defense Minister Gulyamov, Head of the Joint Headquarters of the Armed Forces Ismail Ergashev, and Commander of the Eastern Military District Kosimali Akhmedov. Burnashev and Chernykh said that '..although these dismissals did not change the formal system of administration in the security and military structures, they reflected serious shifts in power relations among regional elites representing their clans.' A joint statement of the member countries of the Shanghai Cooperation Organisation issued in early July 2005 on a conference in the Kazakh capital of Astana called for a withdrawal of US troops from military bases in Central Asia. On 29 July 2005, Uzbekistan invoked a provision asking the U.S. to leave within 180