4th Regiment, Tennessee Infantry (Union)
The 4th Regiment, Tennessee was later called the 1st Tennessee Cavalry Regiment. Also called 1st East Tennessee Cavalry Regiment.
The 4th Regiment, Tennessee Infantry was organized at Camp Garber, near Flat Lick, Kentucky, November, 1861, to March, 1862. They mustered out August 2, 1865. 
For more information on the history of this unit, see:
- The Civil War Archive section, 4th Regiment Infantry, (accessed 30 March 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 1st Congressional District, mainly Greene and Cocke Counties.
- Company B - Men from 1st Congressional District.
- Company C - Enrolled at Greeneville, Greene County, with men from 3rd Congressional District.
- Company D - Men from 1st and 3rd Con-gressional Districts.
- Company E - Enrolled at Greeneville, Greene County, with men from 1st Congressional Dis-trict.
- Company F - Enrolled at Greeneville, Greene County, with men from 1st Congressional District
- Company G - Men from 1st Congressional District.
- Company H - This company was not fully organized until 1865, composed of a detachment from the 1st Congressional District. 
- 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.
- 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. Infantry - The Fourth Regiment begins on page 182.
- 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.
- Tennesseans in the Civil War, (accessed 2 Sep 2011). Brief History, Field Officers and Captains listed.
- Federal Military Rosters, 4th Tennessee Infantry Regiment, (accessed 26 Feb 2012).
- Greene County Genealogy, Civil War 4th Tennessee Infantry, US, (accessed 26 Feb 2012). Organization, timeline and engagements.