154th Regiment, Illinois Infantry
The 145th Regiment, Illinois Infantry was organized at Camp Butler and mustered in February 21, 1865. They moved to Tullahoma, Tennessee., May 13-15; thence to Nashville June 11 and Garrison duty there until September. It mustered out September 18, 1865. 
For more information on the history of this unit, see:
- The Civil War Archive section, 154th Regiment Infantry, (accessed 15 June 2012).
- The Wikipedia article, 154th Illinois Volunteer Infantry Regiment, (accessed 15 June 2012).
Companies in this Regiment with 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.
The following counties of origin are taken from the Adjutant General's Report, found on the Illinois Civil War Rosters web site. Roster pages are from the same report found on the Internet Archives web site. The rosters show the men who served in each regiment, their residences, dates of enlistment and mustering out, and other remarks.
- Company A - many men from Champaign County - Champaign County - web site - Roster, vol. 7, page 404.
- Company B - many men from Douglas, Jersey, and Champaign counties - Douglas, Jersey, and Champaign county web sites - Roster, vol. 7, page 405.
- Company C - many men from Assorted counties - Roster, vol. 7, page 407.
- Company D - many men from Bond County - Bond County web site - Roster, vol. 7, page 409.
- Company E - many men from Lawrence County - Lawrence County web site - Roster, vol. 7, page 410.
- Company F - many men from Randolph County - Randolph County web site - Roster, vol. 7, page 412.
- Company G - many men from Assorted counties - Roster, vol. 7, page 414.
- Company H - many men from Effingham County - Effingham County web site - Roster, vol. 7, page 415.
- Company I - many men from Washington County - Washington County web site - Roster, vol. 7, page 417.
- Company K - many men from Morgan County - Morgan County web site - Roster, vol. 7, page 419.
- 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 ‘Illinois 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.
- Illinois in the Civil War describes many Confederate and Union sources, specifically for Illinois, 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.
- National Park Service, The Civil War Soldiers and Sailors System (accessed 4 January 2011).