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During the Cold War, the Canadian Navy played a crucial role in antisubmarine warfare (ASW), working closely with its allies to patrol and monitor the North Atlantic and Pacific Oceans for Soviet submarine activity. Canada invested in new technology and continually modernized its fleet of ships and aircraft to better detect and counter Soviet submarines. It also operated strategic warning systems with its allies, particularly the United States. By the end of the Cold War, Canada had developed a very high reputation in the field.

This article is from our Toronto Feature series. Features from past programs are not updated.

The Battle of Ridgeway is also known as the Battle of Lime Ridge or Limestone Ridge. It was fought on the morning of 2 June 1866, near the village of Ridgeway and the town of Fort Erie in Canada West (present-day Ontario). Around 850 Canadian soldiers clashed with 750 to 800 Fenians — Irish American insurgents who had crossed the Niagara River from Buffalo, New York. It was the first industrial-era battle to be fought exclusively by Canadian troops and led entirely by Canadian officers. It was the last battle fought in Ontario against a foreign invasion force. The battlefield was designated a National Historic Site in 1921.

HMCS Sackville is the last surviving corvette used by the Royal Canadian Navy in the Second World War. The warship was one of 123 Canadian corvettes that escorted supply convoys crossing the North Atlantic during the Battle of the Atlantic, the longest running battle of the war. In 1985, HMCS Sackville was designated Canada’s Naval Memorial.

A crushing defeat for the British in the War of 1812, the sacking of York began on the morning of 27 April 1813. At dawn, a flotilla of 16 American ships under Commodore Isaac Chauncey made its way to the capital of Upper Canada, York [Toronto]. Landing to the west, the Americans suppressed the small group of warriors defending the shore, while knocking out the town's meagre batteries. The American force of approximately 1,700 men easily assumed control. With the fort poorly defended by an undersized garrison of 700 soldiers and backed by an unenthusiastic (indeed, almost wholly absent) militia, the British general, Sir Roger Hale Sheaffe, retreated. He left behind two local militia officers to negotiate the terms of surrender.

HMS Shannon was a fully-rigged, 38-gun Leda-class frigate, one of the largest frigates built for the Napoleonic Wars. It had two decks, with the main armaments on the upper deck, and could take on a complement of 330 men.

The Victoria class are diesel-electric powered conventional attack submarines, referred to as SSK submarines. The Royal Canadian Navy (RCN) acquired four surplus Victoria-class submarines from the United Kingdom’s Royal Navy (RN) in the late-1990s. They were procured as a supposedly cost-effective interim measure to maintain a submarine capability for the RCN pending a permanent replacement for its three Oberon-class submarines. Following a troubled decade-long introduction process, the Victoria class eventually achieved full operational status. The Victoria-class submarines are intended to remain in service until a replacement projected for the late 2030s.

The October Crisis happened in the fall of 1970. It was sparked by the Front de liberation du Québec (FLQ). The FLQ used terrorist tactics to try and make Quebec independent from Canada. On 5 October, the FLQ kidnapped James Cross, a British trade commissioner. The FLQ also kidnapped Quebec cabinet minister Pierre Laporte. Prime Minister Pierre Trudeau invoked the War Measures Act. The Act had never been used before during peacetime. It suspended civil liberties and led to hundreds of arrests. Laporte was murdered and found on 17 October. Cross was freed on 3 December. The crisis ended on 28 December, when Laporte’s killers were captured.

(This article is a plain-language summary of the October Crisis. If you are interested in reading about this topic in more depth, please see the full-length entry.)

Conscription is the drafting of people for mandatory military service. Canadians have been conscripted twice in history. Both times, only males were conscripted. The first time was during the First World War. The second time was during the Second World War. Conscription was an issue that divided Canada. Most English-speaking Canadians supported it. Most French-speaking Canadians opposed it.

(This article is a plain-language summary of Conscription in Canada. If you are interested in reading about this topic in more depth, please see the full-length entry.)

The SS Caribou was a passenger and train ferry that operated in the Cabot Strait between Port aux Basques, Newfoundland and North Sydney, Nova Scotia. On 14 October 1942, the German submarine U-69 sank the vessel, causing the worst loss of life in Canadian waters during the Second World War.

When Canada prepared to produce Bren guns in the lead up to the Second World War, corruption allegations against the process were published. A royal commission was set up by the government but found no evidence of corruption.

No. 8 Company, Canadian Forestry Corps (CFC) was the second Black unit formed in the First World War, after No. 2 Construction Battalion. From November 1918 to March 1919, No. 8 Company improved and repaired airfields and roads in northern Belgium and Germany, providing valuable support to the Royal Air Force (RAF).

The Canadian Rangers are a unique organization within the Armed Forces, created to provide a paramilitary presence in the North and in other remote areas made up of mainly local Indigenous populations. The current number of Canadian Rangers in 2021 is roughly 5,000.

The Victoria Rifles of Halifax was a Black volunteer militia unit of about 70 men in Nova Scotia in the 1860s. The unit participated in anniversary celebrations of the founding of Halifax and in a parade honouring the Prince of Wales, who visited Nova Scotia in 1860. Despite their dedication and skill — and the support of some white Haligonians — the “Victorias” were subjected to anti-Black racism both within and outside the militia. The unit disbanded after approximately four years.

The Halifax class of helicopter-carrying frigates (FFH) are multi-purpose warships of the Royal Canadian Navy (RCN). There are 12 ships in the class. They were conceived in the 1970s as a replacement of the St Laurent and related classes of destroyer escorts, to provide antisubmarine warfare (ASW) protection for the fleet. The Halifax class entered service in the early 1990s, just after the end of the Cold War, and proved instead to be highly versatile general-purpose warships. Due to a major class-wide modernization project completed in the 2010s, they remain the backbone of the RCN surface fleet. The Halifax class will be replaced in the 2030s by the Canadian Surface Combatant (CSC) ships announced in 2019.