A North View of Fort Frederick built by order of Hon. Col. Robert Monckton on the entrance of the St. John River in the Bay of Fundy, 1758 by Lt Thomas Davies National Gallery of Canada (no 6269) (cropped)

The St. John River Campaign occurred during the French and Indian War when Colonel Robert Monckton led a force of 1150 British soldiers to destroy the Acadian settlements along the banks of the Saint John River. Monckton established a new base of operations by reconstructing the old French fortification Fort Menagoueche at the mouth of the river. He re-named it Fort Frederick. Destroyed in 1777, it was replaced by nearby Fort Howe.