One of the biggest things we get asked, to myself, to many libraries, to the state library and archives, and to the Seminole Wars Foundation, is from someone doing genealogy research. They have an ancestor who fought as a soldier in the Florida Seminole War and are looking for more information. Maybe they don't want to pay for a subscription to Ancestry.com. (I have one, but I understand.)
So, where can they look? Well, this will be about the most comprehensive list of sources anywhere.
Here is a good bibliography:
WHO FOUGHT IN THE SEMINOLE WARS
Officers in the Regular Army
• Heitman, Francis B. Historical Register and Dictionary of the United States Army From Its Organization, September 29, 1789 to March 2, 1903. [Google eBook]
• Cullum, George W. Biographical Register of the Officers and Graduates of the United States Military Academy at West Point, NY [Google eBook]
• U.S. Army, Register of Enlistments, 1798-1914. [online at Ancestry.com]. Also available at the National Archives, Microfilm M233, 81 rolls. Arranged chronologically and then alphabetically by the first letter of the soldier’s surname.
• Old War Index to Pension Files, 1815-1926. National Archives, Microfilm T316. Arranged alphabetically by the claimant’s surname.
• Index to Indian War Pension Files, 1892-1926. Card index relates to service in the Indian campaigns, 1817-1898. National Archives, Microfilm T318, 12 rolls. Arranged alphabetically.
State Militia or Volunteer Soldier
• Index to Compiled Service Records of Volunteer Soldiers Who Served During Indian Wars and Disturbances, 1815-1858. National Archives, Record Groups 94 and 407, Microfilm M629, 42 rolls. Alphabetical index gives soldier’s name, rank, unit, and war or disturbance they served in.
• U.S. Army Indian Campaign Service Records Index, 1815-1858 [Ancestry.com] Database contains alphabetical card indexes to compiles service records of Volunteer soldiers who belonged to units from Alabama, Georgia, North Carolina and Tennessee who served during the Cherokee disturbances and removal, 1836-1839. Volunteer soldiers who served in various Indian wars or participated in the quelling or solving of Indian disturbances or problems, 1815-1858.
Gen. R. K. Cal’s Brigade of Florida Mounted Volunteers, 1835
Major Leigh Read’s Battalion of Florida Volunteers, 1836
Warren’s 1st Regiment of Florida Mounted Volunteers, 1836-1837
Resources found at major libraries throughout Florida and at the Florida State Archives.
• Index to Compiled Service Records of Volunteer Soldiers Who Served During Indian Wars and Disturbances, 1815-1858. There is no state index, but participants are included in this master index.
• Compiled Service Records of Volunteers Who Served in Organizations from the State of Florida During the Florida Indian Wars, 1835-1858. Also available at National Archives, M1086, 63 rolls. Organized by war, then by unit, and then alphabetically by surname.
• Original Florida Territorial Muster Rolls, 1826-1849. Includes a few original muster rolls from the Second Seminole War.
• Seminole War Muster Rolls of Florida Militia, 1836-1841, 1856-1858.
• Soldiers of Florida in the Seminole Indian, Civil, and Spanish-American Wars. (Florida Board of State Institutions, 1903; reprinted, Macclenny, Fla.: Richard J. Ferry, 1983) [Check Florida State Library website under Florida History and Materials for digitized copy]
• Florida War Death List, 1836-1842. [Ancestry.com]
• Florida Militia Muster Rolls: Seminole Indian Wars. 10 vols. Florida Department of Military Affairs [online at http://ufdc.ufl.edu/UF00047719/00011/1j]
Check Military Records in other state Department of Archives and History [i.e. www.archives.state.al.us/]
Colonel William Chisolm’s Regiment of Alabama Volunteers (Inf.), 1836
Major Caulfield’s Battalion of Alabama Mounted Volunteers, 1836-1837
• Index to Compiled Service Records of Volunteer Soldiers Who Served During the Florida War in Organizations from the State of Alabama. National Archives, M245, 1 roll. Arranged alphabetically by name.
• Public Information Subject file-Alabamians at War—Alabama Department of Archives and History. Box: 2nd Creek War, 1835-36; Folder: Indian War; Location #SG013379; Folder #001; Folder: Muster Rolls, 1836-1838, Location #SG013379, Folder #006; Folder: Soldiers, 1836-1839, Location #SG013379, Folder #007.
• Alabama Militia Service Cards. Alabama Department of Archives and History, Microfilm in Research Room.
District of Columbia
Captain Irvin’s Company of District of Columbia Volunteers, 1836-1837
Major Mark A. Cooper’s 1st Battalion of Georgia Foot (Inf.), 1836
Major Robertson’s Augusta (GA) Battalion (Inf.), 1836
Major Nelson’s Battalion of Mounted Volunteers, 1836-1837
• Georgia Archives Vertical Files: military records [Georgia Department of Archives and History]
Colonel P. F. Smith’s Regiment of Louisiana Volunteers (Inf. & Rifle), 1836
Capt. H. Marks’ Company of Louisiana Volunteers, 1836
• Index to Compiled Service Records of Volunteer Soldiers Who Served During the Florida War in Organizations from the State of Louisiana. National Archives, M239, 1 roll. Arranged alphabetically by name.
• Index to Compiled Service Records of Volunteer Soldiers Who Served During the War of 1837-1838 in Organizations from the State of Louisiana. National Archives, M241, 1 roll. Arranged alphabetically by name.
Colonel Richard Gentry’s 1st Regiment of Missouri Vol. (Mtd. Inf.), 1837-1838
Major Morgan’s Spy Battalion, Missouri Volunteers (Mtd. Inv.), 1837-1838
New York Volunteer Company, 1837-1838
Pennsylvania Battalion of Infantry Volunteers, 1837-1838
Colonel Goodwyn’s Regiment of SC Mounted Volunteers (Mtd. Rifle), 1836
Colonel William Brisbane’s Regiment of SC Volunteers (Inf.), 1836
Captain Elmore’s Corps of Columbia and Richland Riflemen, 1836
Gen. Armstrong’s Brigade of Tennessee Mounted Volunteers, 1836-1837 (including
the 1st and 2nd Regiments of Tennessee Mounted Volunteers)
Major Lauderdale’s Battalion of Tennessee Volunteers, 1837-1838
And there are a few other states and few other sources. But this should get you started.