• Authorized on September 16, 1776 in the Continental Army as Bigelow's Regiment.
• Assigned on February 9, 1777 to the Northern Department.
• Relieved on March 13, 1777 from the Northern Department and assigned to the Highland's Department.
• Organized in spring 1777 at Boston to consist of 8 companies from Berkshire, Bristol, Middlesex, Essex, Suffolk, Cumberland and Worcester Counties.
• Assigned on June 12, 1777 to the 2nd Massachusetts Brigade, an element of the Highland's Department.
• 2nd Massachusetts Brigade relieved on July 24, 1777 from the Highland's Department and assigned to the Northern Department.
• 2nd Massachusetts Brigade relieved on November 7, 1777 from the Northern Department and assigned to the Main Continental Army.
• 2nd Massachusetts Brigade relieved on July 22, 1778 from the Main Continental Army and assigned to the Eastern Department.
• 2nd Massachusetts Brigade relieved on July 7, 1779 from the Eastern Department and assigned to the Highland's Department.
• Redesignated on August 1, 1779 as the 15th Massachusetts Regiment.
• Reorganized on November 1, 1779 to consist of nine companies.
• Disbanded on January 1, 1781 at West Point, New York.

ENGAGEMENTS