Rous was also the senior naval officer on the Nova Scotia station during Father Le Loutre's War.

ON the ship Young Eagle, he made raids on the French fishing fleets and ports on the north shore of Newfoundland.

In September 1746 with Annapolis Royal under threat of attack by the remnants of Duc d'Anville's fleet, Captain Rous, commanding the Shirley, was ordered to assist in the defence of the fort.

There he along with Captain Richard Spry "agreed to haul their ships under the Fort upon the arrival of the fleet and land their men and guns for the defence of it.

"[6] In 1747, after the Battle of Grand Pré, Rous sailed for the Minas Basin with a detachment under the command of Captain John Winslow, to re-establish British control over the area.

As the admiralty did not provide effective naval forces for the defence of Nova Scotia, Rous improvised to establish and protect the new British settlements at Halifax, Lunenburg, and Lawrencetown.

[1][5] He went on to take part at the capture of Quebec in 1759, leading Admiral Sir Charles Saunders's fleet up the river, and landing troops for the attack under General James Wolfe.