• Authorized ono April 23, 1775 in the Massachusetts State Troops as Learned's Regiment.
• Organized in spring 1775 at Roxbury to consist of 10 companies from southwestern Worcester County.
• Adopted on June 14, 1775 into the Continental Army and assigned to the Main Continental Army.
• Assigned on July 22, 1775 to Spencer's Brigade, an element of the Main Continental Army.
• Relieved on August 9, 1775 from Spencer's Brigade and assigned to Thomas' Brigade, an element of the Main Army.
• Consolidated on January 1, 1776 with Danielson's Regiment and Wood's Company, Cotton's Regiment, and consolidated unit redesignated as the 3rd Continental Regiment, an element of Thomas' Brigade, to consist of 8 companies.
• Relieved on April 24, 1776 from Thomas' Brigade and assigned to Heath's Brigade, an element of the Main ContinentalArmy.
• Relieved on August 12, 1776 from Heath's Brigade and assigned to Clinton's Brigade, an element of the Main Continental Army.
• Consolidated on January 1, 1777 with King's Company, 21st Continental Regiment and consolidated unit redesignated as Shepard's Regiment, to consist of 8 companies.
• Relieved on February 9, 1777 from Clinton's Brigade and assigned to the Northern Department.
• Relieved on March 13, 1777 to from the Northern Department and assigned to the Highland's Department.
• Assigned on June 12, 1777 to the 1st Massachusetts Brigade, an element of the Highland's Department.
• Relieved on June 15, 1777 from the 1st Massachusetts Brigade and assigned 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.
• Reorganized on April 1, 1779 to consist of 9 companies.
• 2d Massachusetts Brigade relieved 7 July 7, 1779 from the Eastern Department and assigned to the Highland's Department.
• Redesignated on August 1, 1779 as the 4th Massachusetts Regiment.
• Relieved on January 1, 1781 from the 2nd Massachusetts Brigade and assigned to the 1st Massachusetts Brigade, an element of the Highland's Department.
• Relieved on June 12, 1783 from the 1st Massachusetts Brigade and assigned to the 2nd Massachusetts Brigade, an element of the Highland's Department.
• Disbanded on November 3, 1783 at West Point, New York.

ENGAGEMENTS