Built between 1912 and 1917, this battery was named after Queen Victoria's third son, and then Governor General of Canada, the Duke of Connaught. It was armed with three 4.7" quick-firing guns, two of which came from Fort Clarence, and the third from Fort Charlotte. They fired 12, 45-pound, projectiles per minute to an effective range of 8,000 yards.
After World War I ended, the 70-man garrison was withdrawn, and in 1931, the battery was dropped from the Halifax Harbour defense plan. In 1932, all ammunition was removed from the magazine, and the guns were placed in surplus.
During World War II, the battery grounds were used to operate search lights, and to house married personnel. In 1952-53, those accomodations were removed and the battery closed permanently.