He received four Knox County companies, one from Searsport, Winterport, Wiscasset, and Damariscotta, and two from Belfast.

Gen. Kearney wrote as follows of the conduct of its gallant colonel at Bull Run: "Col. Berry manifested such a genius for war, and such a pertinacity in the fight, as proved him fit for high command."

The heroic commander of the regiment, Hiram G. Berry, was killed amid the awful carnage of the Battle of Chancellorsville, having attained to the rank of major-general and being esteemed one of the most brilliant officers in the service.

On June 25, 1864, the regiment arrived in Rockland, its term of service having expired on the 15th, and after being furloughed was mustered out on July 19.

The number of officers lost by casualties during the service of the regiment was 65; mustered out July 19, 1864, 17; prisoners of war, 2.