The 9th Connecticut Regiment was first called Webb's Additional Continental Regiment (after its colonel, Samuel Blachley Webb) before being added to the Connecticut Line in 1780. It saw action at Setauket in 1777, Rhode Island in 1778, and Springfield, New Jersey, in 1780, and was generally active in the defense of Connecticut, southern New York, and northern New Jersey. In 1778 the regiment was attached to the brigade of General James Varnum. As part of a combined Franco-American attempt to retake British-occupied Newport, Rhode Island, the brigade marched to Rhode Island, where it was involved in the August 29 Battle of Rhode Island. The battle was tactically indecisive, but the regiment was noted for its performance. The regiment wintered in Rhode Island. The regiment was merged into the 2nd Connecticut Regiment on January 1, 1781, at West Point, New York, which was disbanded at the end of the war on November 15, 1783. Colonel Webb, who was exchanged in 1781, was then given command of the reorganized 3rd Connecticut Regiment.