On 1 January 1776 the 1st Massachusetts Regiment (less Morse's and Watkin's 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. 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 24, 1776 from Heath's Brigade and assigned to the Vacant Brigade, an element of the Main Continental Army. Vacant Brigade redesignated on February 16, 1776 as Frye's Brigade. Reassigned on April 15, 1776 from Frye's Brigade and assigned to the Canadian Department. Reassigned on July 2, 1776 from the Canadian Department and assigned to the Northern Department. It was assigned on July 20, 1776 to Reed's Brigade, an element of the Northern Department. Reed's Brigade redesignated on August 11, 1776 as Paterson's Brigade. Reassigned on November 26, 1776 from Paterson's Brigade and assigned to St. Clair's Brigade, an element of the Main Continental Army. On January 1, 1777 it was consolidated with 2 companies formed from the 18th Continental Regiment and 2 companies formed from the 6th Continental Regiment and consolidated unit redesignated as Vose's Regiment, to consist of 8 companies. Designated the 1st Massachusetts Regiment (but was also referred to as Vose's Regiment after its colonel, Joseph Vose).