District of Arizona was a subordinate district of theDepartment of New Mexico territory created on August 30, 1862 and transferred to theDepartment of the Pacific in March 1865.^[1]

Headquarters atFranklin, Texas, thenMesilla Post until 1864.

• James H. Carleton – August 30, 1862 – September 5, 1862
• Joseph R. West – September 5, 1862 – January 29, 1864
• George W. Bowie – January 29, 1864 – November 1864
• Joseph R. Smith – November 1864 – December 8, 1864

HeadquartersPrescott, Arizona

• John S. Mason – March 7, 1865 – July 27, 1865^[2]

On July 27, 1865 theMilitary Division of the Pacific was created underMajor GeneralHenry W. Halleck, replacing the Department of the Pacific, consisting of theDepartment of the Columbia and the expandedDepartment of California, that absorbed the District of Southern California and that consisted of the States ofCalifornia andNevada and theDistrict of New Mexico in theTerritory of New Mexico and District of Arizona in theTerritory of Arizona.^[3]

Arizona remained a district until it became theDepartment of Arizona under theMilitary Division of the Pacific on April 15, 1870. Colonel George Stoneman transitioned from district to department commander, serving until June 4, 1871. The new department consisted of Arizona Territory and California south of a line from the northwest corner of Arizona to Point Conception so as to include most ofSouthern California.^[4]

• MajorJohn S. Mason – March 7, 1865 – April 30, 1866
• Lt. Col.Henry D. Wallen – June 10 – August 11, 1866^[5]
• ColonelCharles S. Lovell – August 11, 1866 – October 12, 1867^[6]
• ColonelThomas L. Crittenden – October 12, 1867 – August 29, 1868
• ColonelThomas C. Devin – August 29, 1868 – August 16, 1869
• ColonelGeorge Stoneman – August 16, 1869 – May 3, 1870

• Fort Buchanan – 1856–1861, 1862
• Fort Breckenridge – 1857–1861,Fort Stanford 1862,Camp Wright 1865,Camp Grant – 1865–1873
• Fort Mojave – 1858–1861, 1863–1890
• Fort Tucson – 1860–1862
  • Tucson Armory – 1862–1864
• Fort Barrett – 1862
• Fort Bowie – 1862–1894
• Mission Camp, nearNogales – 1862
• Fort Tubac – 1862–1865, 1866–1868
• Camp La Paz – September 1863 – 1864, sub post of Fort Mohave betweenOlive City andLa Paz, Arizona.
• Camp at Bear Spring – 1863–1864
• Fort Cerro – 1863 – ?
• Fort Canby – 1863–1864
• Camp Clark – 1863–1864, renamedFort Whipple – 1864–1869
• Camp Pomeroy – 1863
• Camp on the Colorado River,Camp Colorado – 1864–1871, nearParker
• Fort Verde – 1864–1866
• Yuma Depot – 1864–1891
• Post at Calabasas 1865,Fort Mason – 1865–1866, Camp McKee 1866 inRio Rico, Arizona
• Camp Cameron – 1866–1867, inMadera Canyon
• Camp Alexander – 1867, 12 miles up river from Fort Mohave at a crossing on the Colorado River.
• Camp Willow Grove – 1867–1869, south ofValentine
• Camp Devin, renamedCamp Toll Gate until 1870,Camp Hualpai – 1869–1873, nearPaulden

• California in the American Civil War
• New Mexico Territory in the American Civil War
• Arizona Territory in the American Civil War

• Departments and districts of the United States Army
• Union army departments
• California in the American Civil War
• Arizona in the American Civil War
• Pacific Coast Theater of the American Civil War
• 1862 establishments in the United States

• Pages with missing ISBNs
• Articles with short description
• Short description matches Wikidata