Abraham Tyler raised his own company and marched in response to the Lexington alarm, serving as Captain in the Eighteenth Continental Regiment during the siege of Boston and the Ticonderoga campaign of 1776, also in Colonel Thomas Poor's regiment, May 15, 1778, to February 17, 1779. His son, Abraham Tyler, Jr., enlisted in 1781 for three years in Captain John Brooks's company, Seventh Regiment.