The regiment was attached to Negley's 4th Brigade, McCook's Command, at Nolin, Army of the Ohio, to November 1861.
2nd Brigade, 2nd Division, Right Wing, Army of the Cumberland, to January 1863.
2nd Brigade, 2nd Division, XX Corps, Army of the Cumberland, to October 1863.
3rd Brigade, 1st Division, IV Corps, Army of the Cumberland, to June 1865.
The 77th Pennsylvania Infantry mustered out of service at Victoria, Texas, on December 6, 1865.
Camp at Nolin River until December 1861, and at Munfordsville, Ky., until February 1862.
Buell's Campaign in northern Alabama and middle Tennessee June to August.
March to Louisville, Ky., in pursuit of Bragg August 21 – September 26.
Passage of Cumberland Mountains and Tennessee River and Chickamauga Campaign August 16-September 22.
Duty at White sides, Tyner's Station and Blue Springs, Tenn., until April 1864.
Operations on line of Pumpkin Vine Creek and battles about Dallas, New Hope Church and Allatoona Hills May 25-June 5.
Ruff's Station, Smyrna Camp Ground, July 4.
Expedition to Bull's Gap and operations in eastern Tennessee March 13 – April 25.
Moved to New Orleans, La., June 17–25, thence to Indianola, Texas, July 13–21.