At the age of seventeen, Serajah Comstock enlisted, at Norfolk CT in May 1775, in the 7th Connecticut Regiment of Foot, under General Richard Montgomery. The regiment participated in the Canadian Campaign of 1775-76, and saw action at the sieges of Chambly and St. John, and the battles of Longguevil. In January 1776, he was discharged from service at Montreal.

In February 1776, he enlisted, at Montreal, for one year service in Col. Burrall's Regiment of Connecticut Line. He was engaged at Lake Champlain at Mt. Independence VT, and was present at the sinking of Gen. Waterbury's fleet on the lake. He was discharged from service by Gen. Wayne at Ft. Ticonderoga on February 1, 1777.

Serajah returned home to Connecticut. Three and a half years later, December 1, 1780, he enlisted for three years, at Norfolk CT, in the 5th Co., 3rd Connecticut Regiment, commanded by Col. Samuel B. Webb. His company commander was Capt. Samuel Wm. Williams. This regiment was active in New York and New Jersey, and at Yorktown VA.

They participatd in numerous encounters with British & loyalist troops in the New York highlands, Westchester, and Kingsbridge at the Bronx River. In August 1781, they were encamped at Basking Ridge NJ, when Gen. Washington ordered the troops to move south to Yorktown VA. The Siege of of Yorktown began in Sptember 1781.

Pvt. Serajah Comstock was present for the surender of Lord Cornwallis at Yorktown. He remained in service for two more years. He was finally discharged in October 1783 at West Point by Gen. Knox.

. He was pensioned in 1818. He Emigrated from Norfolk, CT to Camden, NY in 1805, to become a "Yankee Yorker", settling on Oswego Road, halfway between Camden and Westdale, on "Ostrander Place". In 1814, he and his wife moved to Williamstown, NY.