My 4th Great Grandfather Colin McLachlan was a Sergeant in Hazen's Regiment from May 1777 to June 1783. He outlined the battles of the regiment in a letter that he wrote and is now in his pension file at the National Archives:
"General Washington's headquarters, when I was discharged was at New-windsor; there he signed my discharge, which was countersigned by Brigadr Gen'l Hazen and adjutant Moore, certifying that I was intitled to wear the badge of Merit for 6 years faithful service my discharge is dated May - 1783, was discharged near Ogdon's furnace, I think in Sussex county Jersey
After the capture of Cornwallis in 1781 the regt. marched to Lancaster where some of Cornwallis' men were sent prisoners. In 1782 we marched to the Jerseys, and in 1783 discharged.
Battles or engagements with the enemy
Hanover in 1777 Staten island ditto Brandywine Sept. 11th, do Germantown Oct. 4th,do Several other skirmishes of less consequence. At Yorktown in Virginia Oct. 1781 this was the last engagement I was in I was at the storming of one of the British's batteries in the night of the 14th of Oct. I was in the platoon of the advanced party that first entered Germantown before the battle became general that morning of Oct. 4th 1777"
Note: Ogden's Furnace was at Pompton, NJ. This town is now in Passaic (previously Bergen) County.
Note: Colin McLachlan was born at Inveraray, Argyle, Scotland in 1750. He joined the Black Watch 42nd Regiment in July 1775 and arrived in America at Staten Island in August 1776. He last appears on 42nd Regiment rolls dated April 30, 1777. He offically joined Hazen's Regiment on May 27, 1777 but some documents in his file indicate May 17, 1777.