The Regiment was authorized on April 23, 1775 in the Massachusetts State Troops as Patterson’s Regiment. Organized in spring 1775 at Cambridge to consist of 11 companies from Berkshire, Hampshire, Suffolk, Middlesex, Worcester, and York Counties, Massachusetts; and Litchfield County, Connecticut. Adopted on June 14, 1775 into the Continental Army and assigned to the Main Continental Army. It was assigned on July 22, 1775 to Heath’s Brigade, an element of the Main Continental Army. consolidated (less Morse’s and Watkin’s Companies) on January 1, 1776 with Sayer’s and Sullivan’s Companies, Scammon’s Regiment, and consolidated unit re-designated as the 15th Continental Regiment, an element of Heath’s Brigade, to consist of 8 companies. More’s Company consolidated with Prescott’s Regiment (7th Continental Regiment) and Watkin’s Company consolidated with Phinney’s Regiment (12th Continental Regiment). Reassigned on January 1, 1781 from the 2nd Massachusetts Brigade and assigned to the 1st Massachusetts Brigade, an element of the Highland’s Department. Disbanded on November 3, 1783 at West Point, New York.