In January 1722 Colonel Westbrook led a group of militia that, unable to find Rale, seized a strongbox containing his correspondence with Marquis de Vaudreuil, the French Governor in Quebec, and a hand written dictionary of the native Abenaki language.
He was present at the December 15, 1725 Falmouth peace treaty with the Indians, "Dummer's Treaty", which ended the hostilities, apparently his last act as a militia officer [REF].