During the French and Indian War, in conjunction with Governor William Shirley of Massachusetts, he helped raise forces for the Battle of Fort Beauséjour on 16 June 1755. He wrote the deportation order, and orchestrated the various campaigns of the Expulsion of the Acadians, beginning with the Bay of Fundy Campaign (1755). After the native Raid on Lunenburg (1756), he placed a bounty on male native scalps.