13th Regiment, Tennessee Cavalry (Union)
13th Regiment, Tennessee Cavalry was organized at Strawberry Plains, Nashville and Gallatin, Tennessee, October, 1863. It mustered out September 5, 1865. 
For more information on the history of this unit, see:
- The Civil War Archive section, 13th Regiment Cavalry, (accessed 5 April 2012).
- The Wikipedia Article, 13th Regiment Tennessee Volunteer Cavalry, (accessed 28 November 2012).
Companies in this Regiment with the Counties 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.
- Company A - Men from Carter County.
- Company B - Men from Carter County.
- Company C - Men from Carter County.
- Company D -
- Company E - Men from Greene and Johnson County.
- Company F -
- Company G - Men from Carter County.
- Company H - Men from Carter County.
- Company I - Men from Washington County. This company completed its muster at Nashville, April 13, 1864, with recruits from Johnson County.
- Company K -
- Company L - Tennesseans from Union, Carter, Jefferson, Greene and Johnson Counties.
- Company M - About one third from other states. Tennesseans from Johnson, Carter, Sullivan and Washington Counties. 
- Beginning United States Civil War Research gives steps for finding information about a Civil War soldier or sailor. It covers the major records that should be used. Additional records are described in 'Tennessee 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.
- Tennessee in the Civil War describes many Confederate and Union sources, specifically for Tennessee, 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.
- Wright, General Marcus J., Tennessee in the War 1861-1865, (Ambrose Lee Publishing Company, Williamsbridge, New York City, 1908), Online book at Internet Archive. Roster of the volunteer force in the United States army from Tennessee. Roster of officers is given as it stood on the day of the muster out. Cavalry 13th Regiment begins on page 160.
- Scott, Samuel W., and Angel, Samuel P., History of the Thirteenth Regiment, Tennessee Volunteer Cavalry, U. S. A., P. W. Ziegler and Co., Philadelphia, 1903. Online book at Google Books, (accessed 26 Feb 2012).
- Federal Military Rosters, 13th Cavalry Regiment, (accessed 18 Jan 2012).
- Wikipedia, 13th Regiment Tennessee Volunteer Cavalry, (accessed 29 Jan 2012).
- Tennesseans in the Civil War, 13the Tennessee Cavlary Regiment, USA, (accessed 29 Jan 2012). A brief history, field officers and captains of companies.
- Clark, Ralph - 13th Tennessee Cavalry Regiment, USA, (accessed 29 Jan 2012). A brief history.
- New River Notes, Nominal Roster of the 13th Tennessee Cavalry US Army 1863-1865, (accessed 29 Jan 2012).
- Ramblings, Civil War, 13th Tennessee Volunteer Cavalry, (accessed 29 Jan 2012). A brief history.