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The First Arkansas Cavalry was organized at Cassville and Springfield, Missouri in June of 1862 and was mustered in at Springfield on August 7, 1862. The 1st Arkansas Cavalry served in the Department of Missouri from August 1862 to June 1864 and Department of Arkansas from June 1864 to August 1865. The unit was part of the Army of South West Missouri from June 1862 to October 1862 and part of the Army of the Frontier from October 1862 to December 1862. From June 1863 to June 1864 the 1st AR CAV was part of the district of South West Missouri but were unattached from any division. From June 1864 to August 1865 the 1st AR CAV was part of the Department of Arkansas.
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Army of South West Missouri, 3rd Division
| Brigadier General E.B. Brown | June-September 1862 |
| Brigadier General J.M. Schofield | September/October 1862 |
Army of the Frontier, 1st Brigade Major General J. M. Schofield
October - December 1862
| 3rd Division | Brigadier General F.J. Herron |
| 20th Wisconsin Infantry Brigade | Colonel B. Pickney, |
District of SouthWest Missouri (Unattached)
June 1863 - June 1864
| Brigidier General J.B. Sanborn, Army Commander | |
| Brigadier General John McNeil, Division Commander | |
| Colonel W.F. Cloud, Brigade Commander |
Department of Arkansas, Frontier Division, 7th Army Corps, 3rd Brigade
June 1864 - January 1865
| Colonel E. Lynde, Brigade Commander | April - July 1864 |
| Colonel W.R. Judsen, 6th Kansas Cavalry | July 1864 - December 1865 |
Department of Arkansas, 7th Army Corps, 3rd Division, 2nd Brigade
February 1865
Department of Arkansas, 7th Army Corps, 3rd Division, 1st Brigade
February 1865 - August 1865
| Army Commander | Brigadier General John Edwards |
| Division Commander | Colonel J.A. Garrett |
| Brigade Commander | Colonel J.M. Johnson |
The 1st Arkansas Cavalry was mustered out on August 20, 1865.
1863
1864