During the years 1721-3 Westbrook became a captain in the militia and, after the fall of Colonel
Shadrach Walton from favour with Massachusett's acting Governor
William Dummer, became the colonel in charge of the militia in the "East" (
Maine) A focus during the
Father Rale's War was the New England effort to capture Father
Sebastien Rale, a
Jesuit priest and French national who resided with and, the New Englanders thought, guided the natives to raid and kill or abduct New England colonists. The General Court of Massachusetts in December 1721 directed the militia to apprehend Rale and bring him to
Boston to answer these charges. He was present at the December 15, 1725 Falmouth peace treaty with the Native American's,
Dummer's Treaty, which ended the hostilities, apparently his last act as a militia officer. ==Falmouth, Maine==