Organized at Pontiac, Mich., and mustered in August 29, 1862. Left State for Kentucky September 4. Attached to 3rd Brigade, 1st Division, Army of Kentucky, Dept. of the Ohio, to November, 1862. 1st Brigade, 2nd Division, Army of Kentucky, Dept. Ohio, to January, 1863. 3rd Brigade, District of Central Kentucky, Dept. Ohio, to April, 1863. District of Nashville, Tenn., Dept. of the Cumberland, to June, 1863. 3rd Brigade, 2nd Division, Reserve Corps, Dept. of the Cumberland, to September, 1863. 1st Brigade, 1st Division, Reserve Corps, to October, 1863. 2nd Brigade, 2nd Division, 14th Army Corps, Army of the Cumberland, to November, 1863. Engineer Brigade, Dept. of the Cumberland, to May, 1864. Reserve Brigade, Dept. of the Cumberland, to April, 1865. 3rd Brigade, 2nd Separate Division, District of the Etowah, Dept. of the Cumberland, to June, 1865.
SERVICE:
Operations in Central Kentucky September to November, 1862. Duty at Lexington, Ky., till February 21, 1863. Moved to Danville, Ky., February 21-22, and return to Lexington February 23-24, and duty there till March 21. Operations against Pegram March 21-April 2. Action at Danville March 24. Hickman's Bridge March 24-27. At Stanford till April 8. March to Lebanon April 8-10, thence moved to Nashville, Tenn., April 12-14. Duty at Nashville and guarding railroad April 14 to September 5, 1863. Moved to Bridgeport, Ala., September 5-6; to Rossville, Ga., September 13-14. Reconnoissance to Ringgold, Ga., and skirmish September 17. Battle of Chickamauga September 19-21. Siege of Chattanooga, Tenn., September 24-November 23. Duty at Moccasin Point; engaged in Engineer duty till October 28. At Wauhatchie, Tenn., October 28-30. Regiment attached to Engineer Brigade November 2, and engaged in building road from Chattanooga to Brown's Ferry November 2-21. Laid pontoon bridge for crossing of Sherman's army November 22. Battles of Chattanooga November 23-25. Moved to Lookout Mountain December 1, and engaged in repairing railroad till December 16. Building storehouses in Chattanooga, cutting and rafting timber and similar Engineer duty till May 26, 1864. March to Brown's Mill Creek May 26-31 and joined Headquarters, Army of the Cumberland. Assigned to provost duty at Headquarters, Army of the Cumberland, participating in the following service: Atlanta (Ga.) Campaign June 1 to September 8. Operations about Marietta and against Kenesaw Mountain June 10-July 2. Pine Hill July 11-14. Lost Mountain June 15-17. Assault on Kenesaw June 27. Ruff's Station or Smyrna Camp Ground July 4. Chattahoochie River July 5-17. Building bridges at Pace's Ferry July 18-21. Peach Tree Creek July 19-20. Siege of Atlanta July 22-August 25. Utoy Creek August 5-7. Flank movement on Jonesboro August 25-30. Battle of Jonesboro August 31-September 1. Provost duty at Atlanta September 9-October 31. Escort to Gen. Thomas' Headquarters from Marietta, Ga., to Chattanooga, Tenn., October 31-November 6. Provost duty at Chattanooga till April 1, 1865. Transferred to the District of the Etowah April 1. Duty at Chattanooga till June 20. Mustered out at Nashville, Tenn., June 26, 1865.
Regiment lost during service 3 Officers and 86 Enlisted men killed and mortally wounded and 4 Officers and 306 Enlisted men by disease. Total 399.
