Authorized on January 11, 1777 in the Continental Army as the S. B. Webb's Additional Continental Regiment. The regiment was organized in the spring of 1777 at Wethersfield, Connecticut, to consist of 8 companies from New London, New Haven, and Hartford Counties. It was assigned to the on April 14, 1777 to the Highland's Department. Re-organized on April 9, 1780 to consist of 9 companies. Adopted on July 24, 1780 by Connecticut and redesignated as the 9th Connecticut Regiment. Merged on January 1, 1781 with the 2nd Connecticut Regiment.