Click on the underlined name to go directly to that site. Be sure to scroll down pages and search side bars for the information you are looking for. Many of these sites will have more than one database on a page.
General Sites:
Cornell University (Official Records of the War of the Rebellion)
Library of Congress (Regimental Histories)
Louisiana State University’s Civil War Center (Comprehensive site with many links)
National Park Service (Civil War Soldiers & Sailors System)
United States Army Military History Institute (Photographs and regimental information)
State Rosters, Pensions, and Other Indexes:
Alabama State Archives (Roster of soldiers from Alabama)
Andersonville and Fort McHenry Records (Roster of Union and Confederate Prisoners)Arkansas History Commission (Index of Confederate Pensions and Soldiers Home)
Illinois In The Civil War (Regimental and county of origin information)
Illinois State Archives (Roster of Illinois soldiers)
Civil War Florida (Roster and Compiled Service Records of soldiers from Florida)
Florida Memory (Confederate Pensions)
Georgia’s Virtual Vault (Confederate pensions, enlistment oaths, and discharges)
Kansas State Historical Society (Kansas Adjutant General’s Report)
Louisiana State Archives (Confederate Pension Index)
Missouri Civil War Message Board (County of origin for Missouri militia units)
Missouri State Archives (Roster of Missouri soldiers and Provost Marshal index)
Ohio In The Civil War (Regimental information)
Oklahoma Department of Libraries (Confederate Pension Index)
Pennsylvania State Archives (Roster of soldiers from Pennsylvania)
South Carolina Department of Archives and History (Confederate Pension Index)
Tennessee State Library and Archives (Rosters and various other military records)
Texas State Library and Archives (Indigent Families and Confederate Pensions)
Library of Virginia (Confederate Pensions and various other military records)
Wisconsin Historical Society (Roster and Veterans Schedules)
Subscription Sites:
American Civil War Research Roster (Soldier Records)
Ancestry (Union pension index, 1890 Veterans Schedules, and Prisoner of War Records) Note: Ancestry Library Edition is available at a Springfield-Greene County branch.
Footnote (Compiled Service Records and Records of the Southern Claims Commission)