Jeff Davis Legion, Mississippi Cavalry
Jeff. Davis Cavalry Legion was organized in January, 1862, using the 2nd Mississippi Cavalry Battalion as its nucleus. At that time the unit contained two Alabama, one Georgia, and three Mississippi companies. On July 11, 1864, the 4th Alabama Cavalry and Company D of Mullen's Georgia Cavalry were assigned to the legion. However, by the end of July the 4th Alabama Battalion was transferred to the Phillips Georgia Cavalry Legion. The unit served under Generals Hampton, Butler, and P.M.B. Young. The unit participated in the campaigns of the Army of Northern Virginia from Williamsburg to Cold Harbor, then was active north and south of the James River. In April, 1862, it contained 171 effectives. It lost 4 wounded at Brandy Station, and had 4 killed and 10 wounded of the 246 at Gettysburg. En route from Pennsylvania, it had 2 killed and 12 wounded, and 3 were wounded during the Bristoe Campaign. In 1865 the unit was assigned to General Logan's Brigade and surrendered with the Army of Tennessee. Its field officers were Colonel William T. Martin, Lieutenant Colonels William G. Conner and J. Fred. Waring, and Major Ivey F. Lewis and W.M. Stone. 
2nd Cavalry Battalion was organized at Manassas, Virginia, in October, 1861, with one Alabama and three Mississippi companies. During January, 1862, it merged into the Jeff. Davis Mississippi Cavalry Legion. Major William T. Martin was in command. 
For more information on the history of the Jeff Davis Cavalry Legion, see the following:
- The Wikipedia article, Jeff Davis Cavalry Legion, (accessed 7 November 2011)
Regiment Companies with the County of Origin
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles, companies might be combined because so many men were killed or wounded. However if you are unsure which company your ancestor was in, try the company recruited in his county first.
- Beginning United States Civil War Research gives steps for finding information about a Civil War soldier. It covers the major records that should be used. Additional records are described in ‘Mississippi in the Civil War’ and ‘United States Civil War, 1861 to 1865’ (see below).
- National Park Service, The Civil War Soldiers and Sailors System, is searchable by soldier's name and state. It contains basic facts about soldiers on both sides of the Civil War, a list of regiments, descriptions of significant battles, sources of the information, and suggestions for where to find additional information.
- Mississippi in the Civil War describes many Confederate and Union sources, specifically for Mississippi, and how to find them.. These include compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.
- United States Civil War, 1861 to 1865 describes and explains United States and Confederate States records, rather than state records, and how to find them. These include veterans’ censuses, compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.