World History Maps Interactive Historical Atlas of the Civil War, detail page for:

New Mexico, US Army Department before Nov 6, 1860 - Jul 3, 1861
New Mexico, US Army Department Nov 9, 1861 - after Jun 25, 1865

Thomas T. Fauntleroy Commander, before Nov 6, 1860 - Jan 22, 1861

William W. Loring Commander, Jan 22, 1861 - Jun 11, 1861
Edward R. S. Canby Commander, Jun 11, 1861 - Jul 3, 1861
US Dept. of the West reorganized as Western Dept. including Iowa Minnesota Kansas Nebraska Colorado and Dakota Missouri and Illinois transferred from Dept. of the Ohio Dept. of New Mexico discontinued and absorbed, Jul 3, 1861
US Dept. of New Mexico recreated New Mexico transferred from Western Dept., Nov 9, 1861
Edward R. S. Canby Commander, Nov 9, 1861 - Aug 26, 1862

Sibley’s New Mexico Campaign, Feb 7, 1862 - Apr 22, 1862
Valverde, engagement, Feb 20, 1862 - Feb 21, 1862
Glorieta Pass, engagement, Mar 26, 1862 - Mar 28, 1862
James H. Carlton Commander, Aug 26, 1862 - after Jun 25, 1865

Arizona transferred from US Dept. of New Mexico to Dept. of the Pacific, Jan 20, 1865