Alaska Defense Command (ADC) was established on 4 February 1941 as the command formation of the U.S. Army responsible for coordinating the defense of the Alaska Territory of the United States. The first commanding general of ADC was Brigadier General Simon Bolivar Buckner, Jr.. Until 1 November 1943, Alaska Defense Command was under the jurisdiction of the Western Defense Command, headquartered at the Presidio of San Francisco. ADC was dissolved on 31 October 1943 and replaced by the Alaskan Department, still commanded by now Lieutenant General Buckner but now reporting directly back to the War Department in Washington, D.C.