33rd Regiment, Tennessee Infantry
The 33rd Regiment, Tennessee Infantry was formed in October, 1861, near Union City, Tennessee. It had 24 disabled at Missionary Ridge and totalled 124 men and 69 arms in December, 1863. It surrendered in April, 1865. 
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 - Captains Ellison S. Howard, W.C. Fleming, Henry W. Hickman - Men from Obion County.
- Company B - Captain Thomas Lacy - Men from Madison County, some from Hardeman County.
- Company C - Captain Frank W. Marberry - Men from Calloway County, Kentucky.
- Company D - Captains Wade H. frost, James R. Scott - "The Forest Rovers." Men from Obion County.
- Company E - Captains T.R. Hutcherson (Or Hutchinson) (or Hutchison), John W. Walker - Men from Obion County.
- Company F - Captains John Bedford, R.F. Morris, W.B. Jones, W.H. Adams - Men from Obion County.
- Company G - Captains Warner P. Jones, James F. Carpenter, Bennett H. Smith, Eugene R. Morerod - Men from Lake County.
- Company H - Captains T.O. Kiligore, W.R. McWherter, T.L. Killebrew - Men from Weakley County.
- Company I - Captains James M. Wilson, W.E. Caidwell - Men from Obion County.
- Company K - Captain James M. Bradford - Men from Obion County. 
One Company from Madison County, Commanded by Gen. A. W. Campbell
Information from Goodspeed Histories, vol. 10
Company B (Captain w. B. Manly) - many men from Hardeman County
Company A (Captain Ellison Howard) - many men from Obion County
Company C (Captain John Bedford) - many men from Obion County (later consolidated with Company D
Company D (Captain W. H. Frost) - many men from Obion County
Company E (Captain T. R. Hutchinson) - many men from Obion County
Company I (Captain J. M. Wilson) - many men from Obion County
Captain William McWhirter's Company - many men from Palmersville, Weakley County
The information above is from The Goodspeed History of Tennessee, Vol. 12.
- 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.
- Lindsley, John B. The Military Annals of Tennessee: Confederate, First Series; Embracing a Review of Military Operations, with Regimental Histories and Memorial Rolls, Compiled from Original and Official Sources. 1886. Reprint. Spartanburg, South Carolina: Reprint Co., 1974. (Family History Library book 976.8 M2L.) Digital versions at Ancestry ($); Internet Archive. A brief history and memorial rolls of the 33rd Tennessee Infantry begin on page 484.
- Tennesseans in the Civil War, 33rd Tennessee Infantry Regiment, (accessed 22 Oct 2011). A brief history, officers, captains and county links.
- The Thirty-third Tennessee (Confederate) Regiment, a brief history, (accessed 29 Dec 2011).