In the latter part of October, the Regiment left its camp at Arlington Heights, and joined the Army under McClellan at Berlin, still constituting a part of Carroll's Brigade, which had been assigned to Whipple's Independent Division.
On November 7th, by order from the War Department, McClellan was relieved from the command of the Army of the Potomac, and succeeded by Major-General Burnside.
At Falmouth.
On November 17th, the advance of the Army arrived at Falmouth, opposite Fredericksburg, and again the whole Army was confronting Lee.
On December 11th, Fredericksburg was subjected to a heavy artillery fire, to cover the laying of a Pontoon bridge.
Battle of Fredericksburg.
The Battle of Fredericksburg was fought on the 13th, the rebel troops having been forced out of the town to their fortifications on the Heights in the rear.
The Regiment was severely engaged. General Griffin called on Whipple for Carroll's Brigade, and it was promptly moved up through the town under fire of shot and shell. Stopping in a cut of the Richmond Railroad, then climbing the steep embankment, the Brigade rushed on and was soon at the very front. Two Companies went on in advance of the line of battle and had to be recalled. During the night the enemy attempted to force the part of the line occupied by the 84th and 110th Pa., but was repulsed.
7 men killed and 24 wounded.
Colonel Bowman, 84th, and Lieutenant Crowther, 110th, were specially mentioned in the Brigade Commander's report.