The companies composing this Regiment were enrolled from the 18th to the 27th day of April, 1861, and arrived at Camp Taylor, Cleveland, Ohio, April 29, 1861. They were mustered into the United States’ service from the 24th to the 30th day of April, 1861, and on May 2d the Regiment was ordered to Camp Dennison, near Cincinnati, Ohio, where it arrived on the next day. The Regimental organization was at once completed by the appointment of the Field and Staff officers. The officers in command at once commenced instructions in the “drill,” and vigorous efforts were put forth to fit the Regiment for service at the front. At once came the President’s proclamation for 300,000 men for three years, when an effort was made to enlist the Regiment for that period. To this every company responded except Company I, and the new Regiment of nine companies was enrolled for three years from the 5th to the 25th day of June, 1861. Company I was mustered out on expiration of term of service August 21, 1861, with the exception of eight men who were enrolled in Company I on August 10, 1861, for three years; they, with recruits, made the new company and early in September joined the Regiment at Grafton, Va. Those who did not enlist for three years in the other companies were mustered out from August 18th to 22d, 1861, at Columbus, Ohio.