1st Massachusetts Regiment 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 redesignated as the 15th Continental Regiment of Heath ' s Brigade . The regiment would see action at the Battle of Bunker Hill . When the army was reorganized at the end of 1775 the regiment was designated the 15th Continental Regiment , and in 1777 it was designated the 1st Massachusetts Regiment ( but was also referred to as Vose ' s Regiment after its colonel , Joseph Vose ) . 1776 reorganization . The remnants of Paterson ' s Regiment ( less Morse ' s and Watkin ' s companies ) and Sayer ' s and Sullivan ' s companies of Scammon ' s Regiment were combined on 1 January 1776 to form eight companies designated as the 15th Continental Regiment , which was assigned to the brigade of Michael Heath . On 24 January 1776 the regiment was reassigned to an unnamed brigade in the main Continental Army . On 16 February 1776 this brigade was designated as Frye ' s Brigade and on 15 April 1776 the brigade was reassigned to the Canadian Department . The regiment was then reassigned to Reed ' s Brigade of the Northern Department on 20 July 1776 . On 11 August 1776 this brigade was redesignated as Paterson ' s Brigade . On 26 November 1776 the regiment was reassigned to St . Clair ' s Brigade of the main Continental Army . 1777 reorganization . On 1 January 1777 the 15th Continental Regiment was joined by two companies of the 18th Continental Regiment and two companies of the 6th Continental Regiment and re - organized as eight companies , known as Vose ' s , or the 1st Massachusetts Regiment . The regiment was reassigned to the Northern Department on 9 February 1777 . On 13 March 1777 the regiment was assigned to the Highlands Department and assigned to McDougall ' s Brigade on 12 June 1777 and three days later 15 June 1777 was assigned to 2nd Connecticut Brigade of the Highlands Department . On 10 July 1777 the regiment was reassigned to the 2nd Massachusetts Brigade . This brigade was reassigned to the Northern department on 24 July 1777 . On 7 November 1777 the brigade was reassigned to the main Continental Army . On 22 July 1778 the regiment was reassigned to the Eastern Department and re - organized to nine companies on 1 April 1779 and on 7 July 1779 the brigade was reassigned to the Highland ' s Department and was redesignated as the 1st Massachusetts Regiment on 1 August 1779 . 1779 - 1783 . On 1 August 1779 the regiment was in the 2nd Massachusetts Brigade in the Highland Department . On 1 January 1781 the regiment was reassigned to the 1st Massachusetts Brigade in the Highland Department and was disbanded on 3 November 1783 at West Point , New York . Its lineage is carried on by the U . S . 104th Infantry Regiment .