It shared the fortunes of Pope's Bull Run campaign, was in position at Elk Mountain on the 17th of September, during the Battle of Antietam, and subsequently, after performing a variety of fatiguing duties, marched with Franklin's corps to a position in front of Fredericksburg. In the assault upon that city, December 14, it acted with spirit and efficiency. In the preliminary movements of Franklin's corps, this Regiment was the first to cross the river, in face of a heavy body of rebel infantry and artillery, and deploying as skirmishers, drove in their pickets- a movement executed with the coolness and precision of a regimental drill.
During Pope's Bull Run campaign, it participated at Elk Mountain on September 17th during the Battle of Antietam. Later, after undertaking various challenging duties, it joined Franklin's corps to a position in front of Fredericksburg. On December 14th, it fought courageously and efficiently. This Regiment was the first to cross the river against rebel forces, deploying as skirmishers and pushing back their pickets-a maneuver executed with the composure and precision expected from regimental drill.