15th Missouri Volunteer Infantry The 15th Missouri Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War . Service . The 15th Missouri Infantry was organized at St . Louis , Missouri August – September 1861 and mustered in for three years on under the command of Colonel Francis J . Joliat . The regiment was attached to Fremont ' s Army of the West to January 1862 . 5th Brigade , Army of Southwest Missouri , to March 1862 . 1st Brigade , 2nd Division , Army of Southwest Missouri , to May 1862 . 1st Brigade , 5th Division , Army of the Mississippi , to September 1862 . 35th Brigade , 11th Division , Army of the Ohio , to October 1862 . 35th Brigade , 11th Division , III Corps , Army of the Ohio , to November 1862 . 2nd Brigade , 3rd Division , Right Wing , XIV Corps , Army of the Cumberland , to January 1863 . 2nd Brigade , 3rd Division , XX Corps , Army of the Cumberland , to October 1863 , 1st Brigade , 2nd Division , IV Corps , to April 1864 . 3rd Brigade , 2nd Division , IV Corps , to June 1865 . 2nd Brigade , 2nd Division , IV Corps , to August 1865 . Department of Texas to December 1865 . The 15th Missouri Infantry mustered out of service at Victoria , Texas on December 25 , 1865 . Detailed service . Moved to Jefferson City , Mo . , September 1861 . Fremont ' s Campaign against Springfield , Mo . , October 4 - November 8 , 1861 . Moved to Rolla , Mo . , and duty there until February 1862 . Curtis ' Campaign in Missouri and Arkansas against Price February and March . Advance on Springfield February 2 – 11 . Pursuit of Price into Arkansas February 14 – 29 . Battles of Pea Ridge , Ark . , March 6 – 8 . March to Batesville April 5 - May 3 . Moved to Cape Girardeau , Mo . , May 11 – 22 ; thence to Pittsburg Landing , Tenn . , May 23 – 26 . Siege of Corinth May 27 – 30 . Pursuit to Booneville May 31 - June 6 . At Rienzi until August 26 . Moved to Cincinnati , Ohio , August 26 - September 14 ; thence to Louisville , Ky . , September 17 – 19 . Pursuit of Bragg into Kentucky October 1 – 16 . Battle of Perryville , Ky . , October 8 . March to Nashville , Tenn . , October 16 - November 7 . Duty at Nashville until December 26 . Advance on Murfreesboro December 26 – 30 . Battle of Stones River December 30 – 31 , 1862 and January 1 – 3 , 1863 . Duty near Murfreesboro until June . Expedition toward Columbia March 4 – 14 . Tullahoma Campaign June 23 - July 7 . Fairfield June 27 – 29 . Estill Springs July 2 . Reconnaissance to Anderson July 11 – 14 . Occupation of middle Tennessee until August 16 . Passage of Cumberland Mountains and Tennessee River and Chickamauga Campaign August 16 - September 22 . Battle of Chickamauga September 19 – 20 . Siege of Chattanooga September 24 - November 23 . Chattanooga - Ringgold Campaign November 23 – 27 . Orchard Knob November 23 – 24 . Missionary Ridge November 25 . Pursuit to Graysville November 26 – 27 . March to relief of Knoxville , Tenn . , November 28 - December 8 . Operations in eastern Tennessee December 1863 to February 1864 . Dandridge January 16 – 17 , 1864 . Moved to Chattanooga , thence to Cleveland , Tenn . , and duty there until May 1864 . Atlanta Campaign May 1 - September 8 . Demonstration on Rocky Faced Ridge and Dalton May 8 – 13 . Buzzard ' s Roost Gap May 8 – 9 . Battle of Resaca May 14 – 15 . Adairsville May 17 . 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 July 4 . Chattahoochie River July 5 – 17 . Buckhead , Nancy ' s Creek , July 18 . 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 and Forest in northern Georgia and northern Alabama September 29 - November 3 . Nashville Campaign November and December . Columbia , Duck River , November 24 – 27 . Spring Hill November 29 . Battle of Franklin November 30 . Battle of Nashville December 15 – 16 . Pursuit of Hood to the Tennessee River December 17 – 28 . Columbia December 19 . Pulaski December 25 . March from Pulaski to Decatur , Ala . , and duty there until April 1865 . Moved to Blue Springs April 1 – 5 , thence to Nashville , Tenn . , April 19 , and duty there until June . Moved to New Orleans June 15 – 23 , and to Port Lavaca , Texas , July 18 – 24 . Duty there until October . Moved to Victoria October 27 and duty there until December . Casualties . The regiment lost a total of 222 men during service ; 8 officers and 107 enlisted men killed or mortally wounded , 1 officer and 106 enlisted men died of disease .