Name and Rank Residence Date of Commission Date of Muster Remarks​
Colonel​
   ​
John C. Walker La Porte August 14, 1861 December 11, 1861 Discharged on August 6, 1862​
Bernard F. Mullen Madison August 7, 1862 August 7, 1862 Resigned May 19, 1864​
Augustus G. Tassin Leopold February 1, 1865 March 4, 1865 Mustered out with regiment​
   ​
Lt. Colonel   ​
Richard J. Ryan Indianapolis August 28, 1861 December 11, 1861 Dismissed Feb. 15, 1862​
John E. Balfe Lafayette March 18, 1862 March 18, 1862 Resigned April 6, 1862 later Re-Commissioned​
Bernard F. Mullen Madison May 22, 1862 May 22, 1862 From 61st Indiana Promoted Colonel​
John E. Balfe Lafayette Sept. 29, 1862 Sept. 29, 1862 Resigned April 11, 1864​
Augustus G. Tassin Leopold July 16, 1864 July 16, 1864 Promoted Colonel​
Hugh D. Gallagher Osgood Feb. 1, 1865 March 6, 1865 Mustered out with regiment​
   ​
Major   ​
John E. Balfe Lafayette October 10, 1861 December 11, 1861 Promoted Lt. Colonel​
Henry N. Conklin Indianapolis May 22, 1862 May 22, 1862 Resigned Feb. 9, 1863​
John P. Dufficy Terre Haute Feb. 10, 1862 April 26, 1863 Killed in Action Battle of Kennesaw, Ga, June 20, 1864​
James Fitzwilliams Evansville March 1, 1865  Resigned as Captain June 10, 1865​
Abraham Peters Logansport August 1, 1865  Mustered out as Captain in regiment​
   ​
Adjutant   ​
Frank Cunningham Indianapolis Sept. 2, 1861 December 11, 1861 Resigned Oct. 25, 1862​
Bernard R. Mullen Madison Oct. 26, 1862 May 22, 1862 Killed in Action Dobbins Ferry December 1862​
Hugh D. Gallagher Osgood April 25, 1863 June 17, 1863 Promoted Major​
William C. Moriarty Indianapolis August 5, 1864 August 9, 1864 Resigned January 29, 1865​
Gabriel Cooper Cannelton June 1, 1865 December 28, 1864 Mustered out with Regiment​
   ​
Quartermaster   ​
Martin Igoe Indianapolis August 28, 1861 December 11, 1861 Mustered out​
William Flynn Lafayette Dec. 1, 1864 January 14, 1865 Mustered out with regiment​
   ​
Chaplain   ​
Peter Paul Cooney South Bend October 4, 1861 October 4, 1861 Mustered out​
   ​
Surgeon    ​
Andrew J. Mullen Madison August 28, 1861 November 21, 1861 Resigned Feb. 19, 1864​
Henry G. Averdick Oldenburg February 20, 1864 March 14, 1864 Mustered out with regiment​
   ​
Assistant Surgeon   ​
George K. McCoy Gosport December 4, 1861 December 11, 1861 April 16, 1862 Re-entered service as assistant​
Henry G. Averdick Oldenburg May 22, 1862 May 22, 1862 Promoted to Surgeon​
Jerome P. Gerard Aurora October 10, 1862 October 10, 1862 Resigned Feb. 21, 1863​
Nathaniel G. Bell Madison April 25, 1863 May 20, 1863 Resigned November 26, 1864​
George W. Parsons Oldenburg April 13, 1865 May 2, 1865 Mustered out with regiment