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

Mountain, US Army Department Mar 11, 1862 - Jun 26, 1862

US Mountain Dept. created parts of Ohio Michigan Kentucky and Tennessee transferred from Dept. of Ohio Western Virginia transferred from Dept. of Western Virginia Dept. of Western Virginia discontinued, Mar 11, 1862
William S. Rosecrans Temp Commander, Mar 11, 1862 - Mar 29, 1862
John C. Fremont Commander, Mar 29, 1862 - Jun 26, 1862
McDowell, battle, May 8, 1862
Cross Keys, battle, Jun 8, 1862
Eastern Kentucky and eastern Tennessee transferred from US Mountain Dept. to Dept. of The Mississippi, Jun 8, 1862
Forces of the US Depts. Of the Shenandoah Rappahannock and Middle Dept. absorbed by Dept. of the Potomac, Jun 26, 1862