The 1st Massachusetts Regiment was an infantry unit of the Continental Army that fought during the American Revolutionary War. It was first authorized on 23 April 1775 in the Massachusetts State Troops as Paterson's Regiment under Colonel John Paterson and was organized at Cambridge, Massachusetts. It consisted of eleven companies of volunteers from Berkshire, Hampshire, Suffolk, Middlesex, Worcester, and York counties in Massachusetts and the county of Litchfield in the colony of Connecticut. The regiment was adopted into the main Continental Army on 14 June 1775 and was assigned to William Heath's brigade on 22 July 1775. On 1 January 1776 the regiment (less two companies) was consolidated with Sayer's and Sullivan's companies of Scammon's Regiment; re-organized to eight companies and re