• Authorized on December 9, 1775 in the Continental Army as the 2d Pennsylvania Battalion.
• Organized between January 2- February 17, 1776 at Philadelphia to consist of 8 companies.
• Assigned on January 8, 1776 to the Canadian Department.
• Relieved on July 2, 1776 from the Canadian Department and assigned to the Northern Department.
• Assigned on July 20, 1776 to St. Clair's Brigade, an element of the Northern Department.
• Relieved on November 18, 1776 from St. Clair's Brigade.
• Reorganized and redesignated 1 January 1, 1777 as the 3rd Pennsylvania Regiment, to consist of 8 companies.
• Relieved on January 24, 1777 from he Northern Department and assigned to the Main Continental Army.
• Assigned on May 22, 1777 to the 3rd Pennsylvania Brigade, an element of the Main Continental Army.
• Consolidated on July 1, 1778 with the 12th Pennsylvania Regiment and redesignated as the 3rd Pennsylvania Regiment, to consist of 9 companies.
• Relieved on July 22, 1778 from the 3rd Pennsylvania Brigade and assigned to the 2nd Pennsylvannia Brigade, and element of the Main Continental Army.
• Consolidated on January 17, 1781 with the 11th Pennsylvania Regiment and redesignated as the 3rd Pennsylvania Regiment; concurrently furloughed at Trenton, New Jersey, and relieved from the 2nd Pennsylvania Brigade.
• Reorganized on January 1, 1783 at Philadelphia, to consist of 9 companies, and assigned to the Middle Department.
• Furloughed on June 11, 1783 at Philadelphia.
• Disbanded on November 15, 1783.

Lineage taken from "The Continental Army" by Robert K Wright

• Defense of Canada
• Lake Champlain
• Northern New Jersey
• Defense of Philadelphia
• Philadelphia - Monmouth
• New Jersey 1780

The 3rd Pennsylvania Regiment was raised, on December 9, 1775, at Philadelphia, Pennsylvania for service with the Continental Army. The regiment would see action during the Battle of Valcour Island, Battle of Brandywine, Battle of Germantown, Battle of Monmouth and the Battle of Springfield. The regiment was furloughed, on June 11, 1783, at Philadelphia, Pennsylvania and disbanded on November 15, 1783.