81st Indiana Infantry Regiment The 81st Regiment Indiana Infantry was an infantry regiment that served in the Union Army during the American Civil War . Service . The 81st Indiana Infantry was organized and mustered in at New Albany , Indiana for a three year enlistment on August 29 , 1862 under the command of Colonel William W . Caldwell . The regiment was attached to 32nd Brigade , 9th Division , Army of the Ohio , September 1862 . 32nd Brigade , 9th Division , III Corps , Army of the Ohio , to November 1862 . 3rd Brigade , 1st Division , Right Wing , XIV Corps , Army of the Cumberland , to January 1863 . 3rd Brigade , 1st Division , XX Corps , Army of the Cumberland , to March 1863 . 2nd Brigade , 1st Division , XX Corps , to October 1863 . 1st Brigade , 1st Division , IV Corps , Army of the Cumberland , to June 1865 . The 81st Indiana Infantry mustered out of service at Nashville , Tennessee on June 13 , 1865 . Detailed service . Ordered to Louisville , Ky . , August 29 . Pursuit of Bragg into Kentucky October 1 – 15 , 1862 . Battle of Perryville , Ky . , October 8 . March to Nashville , Tenn . , October 16 - November 7 , and duty there until December 26 . Reconnaissance toward Franklin December 9 . Near Brentwood December 9 . Advance on Murfreesboro December 26 – 30 . Nolensville December 26 – 27 . Battle of Stones River December 30 – 31 , 1862 and January 1 – 3 , 1863 . Duty at Murfreesboro until June . Reconnaissance from Salem to Versailles March 9 – 14 . Operations on Eaglesville Pike near Murfreesboro June 4 . Tullahoma Campaign June 22 - July 7 . Liberty Gap June 22 – 27 . Duty at Winchester until August . Passage of the Cumberland Mountains and Tennessee River and Chickamauga Campaign August 16 - September 22 . Battle of Chickamauga September 19 – 20 . Siege of Chattanooga , September 24 - October 25 . Reopened Tennessee River October 26 – 29 . Duty at Bridgeport , Ala . , until January 26 , 1864 and at Ooltewah until May 1864 . Atlanta Campaign May 3 to September 8 , 1864 . Tunnel Hill May 6 – 7 . Demonstrations on Rocky Faced Ridge and Dalton May 8 – 13 . Buzzard ' s Roost Gap May 8 – 9 . Battle of Resaca May 14 – 15 . Near Kingston May 18 – 19 . Near Cassville May 19 . Advance on Dallas May 22 – 25 . Operations on line of Pumpkin Vine Creek and battles about Dallas , New Hope Church and Allatoona Hills May 25 - June 5 . Operations about Marietta and against Kennesaw Mountain June 10 - July 2 . Pine Hill June 11 – 14 . Lost Mountain June 15 – 17 . Assault on Kennesaw June 27 . Ruff ' s Station , Smyrna Camp Ground , July 4 . Chattahoochie River July 5 – 17 . Peachtree Creek July 19 – 20 . Siege of Atlanta July 22 - August 25 . Flank movement on Jonesboro August 25 – 30 . Battle of Jonesboro August 31 - September 1 . Lovejoy ' s Station September 2 – 6 . Operations against Hood in northern Georgia and northern Alabama September 29 - November 3 . Nashville Campaign November – December . Columbia , Duck River , November 24 – 27 . Battle of Franklin November 30 . Battle of Nashville December 15 – 16 . Pursuit of Hood to the Tennessee River December 17 – 28 . Moved to Huntsville , Ala . , and duty there until March 1865 . Operations in eastern Tennessee March 15 - April 22 . At Nashville until June . Casualties . The regiment lost a total of 245 men during service ; 4 officers and 52 enlisted men killed or mortally wounded , 1 officer and 188 enlisted men died of disease .