General Gustavus Nicolls: The Man Who Designed Halifax Citadel

General Gustavus Nicolls was a Royal Engineer whose work left a permanent mark on one of Canada’s most important military sites.

Born in 1779, Nicolls joined the Royal Engineers and eventually became the senior Royal Engineer in Halifax, Nova Scotia. Halifax was one of Britain’s most important naval bases in North America, and after the War of 1812 there was continuing concern that another conflict with the United States might threaten the city.

By the 1820s, Halifax’s existing fortifications were deteriorating. The British government decided that Citadel Hill needed a permanent stone fortress capable of defending the naval base from attack.

Nicolls was given the task of designing it.

In December 1825 he submitted plans and estimates for rebuilding Fort George on Citadel Hill in masonry. His design became the basis of the fourth Halifax Citadel, the great star-shaped stone fortress which still dominates the centre of Halifax today. Construction began in August 1828.

The project was enormous. The finished fort measured roughly 340 metres by 200 metres, with bastions, defensive walls, underground galleries, casemates and protected firing positions. Some surviving parts of the Citadel, including several defensive casemates, were both designed and constructed under Nicolls’ direct supervision. Parks Canada credits him with innovations intended to improve the fields of fire and the working space available to the guns.

The construction did not proceed smoothly. Nicolls originally expected the new fortress to take about six years, but difficulties with the design, the ground and later alterations meant that the Citadel was not finally completed until 1856. Several Royal Engineers who succeeded him modified parts of his original scheme.

Yet the essential fortress remained his conception.

Remarkably, the Citadel was never attacked. Advances in artillery also meant that parts of its design were already becoming outdated by the time it was completed. Nevertheless, it continued to serve military purposes through both world wars and today survives as Halifax Citadel National Historic Site, one of Canada’s best-known historic fortifications.

Nicolls eventually rose to the rank of general and died in 1860.

His memorial at St Peter & St Paul therefore connects Fareham with something still visible more than 3,000 miles away: the great stone fortress overlooking Halifax. Millions of visitors have walked through a building whose original design began on the drawing board of a Royal Engineer remembered here in Fareham.