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On 22 October 2014, Parliament and the National War Memorial in Ottawa were the targets of an unprecedented attack by a lone gunman. The shooter killed Corporal Nathan Cirillo, a ceremonial guard at the War Memorial, and then charged into Parliament, where he was shot to death inside. The attack raised questions about parliamentary security and sparked a national debate over the nature of terrorism.

The Battle of the Plains of Abraham (13 September 1759), also known as the Battle of Quebec, was a pivotal moment in the Seven Years’ War and in the history of Canada. A British invasion force led by General James Wolfe defeated French troops under the Marquis de Montcalm, leading to the surrender of Quebec to the British. Both commanding officers died from wounds sustained during the battle. The French never recaptured Quebec and effectively lost control of New France in 1760. At the end of the war in 1763 France surrendered many of its colonial possessions — including Canada — to the British.

The Seven Years' War (1756–63) was the first global war, fought in Europe, India, and America, and at sea. In North America, imperial rivals Britain and France struggled for supremacy. In the United States, the conflict is known as the French and Indian War. Early in the war, the French (aided by Canadian militia and Indigenous allies) defeated several British attacks and captured a number of British forts. In 1758, the tide turned when the British captured Louisbourg, followed by Quebec City in 1759 and Montreal in 1760. With the Treaty of Paris of 1763, France formally ceded Canada to the British. The Seven Years’ War therefore laid the bicultural foundations of modern Canada.

This is the full-length entry about the Seven Years’ War. For a plain-language summary, please seeSeven Years’ War (Plain-Language Summary).

The crimes of Paul Bernardo and his wife Karla Homolka were among the most horrifying and controversial in Canadian history.

This article contains sensitive material that may not be suitable for all audiences.

Elizabeth Wettlaufer is a former nurse who murdered eight elderly patients and attempted to harm six others in southwestern Ontario between 2007 and 2016. One of the most prolific serial killers in Canadian history, she was sentenced to life in prison for the murders in 2017. The case prompted widespread public outrage and made headlines internationally. It later resulted in lawsuits against Wettlaufer, and the nursing homes she worked for, and a sweeping provincial inquiry into flaws in Ontario’s long-term care system.

Convicted murderer Allan Joseph Legere escaped custody in 1989, and for 201 days terrorized the residents of the Miramichi region of New Brunswick, brutally killing another four people. Known as the “Monster of the Miramichi,” Legere became the object of one of the most intense manhunts in modern Canadian police history.

This article contains sensitive material that may not be suitable for all audiences.

Michael Wayne McGray once boasted of being Canada’s worst serial killer. He was convicted of seven homicides but claimed to have committed as many as 11 other murders in Canada and the United States between 1985 and 1998.

Everett Sylvester Cromwell was a member of the Royal Canadian Army Service Corps during the Second World War. Cromwell was tasked with transporting ammunition, food, and gasoline from depots to the frontlines, risking attacks by enemy paratroopers and planes. Listen to Cromwell's story as he explains the arduous and dangerous work that he had to complete.

Please be advised that Memory Project primary sources may deal with personal testimony that reflect the speaker’s recollections and interpretations of events. Individual testimony does not necessarily reflect the views of the Memory Project and Historica Canada.

Randolph George Hope was a member of Canada’s merchant navy, supplying Allied areas of operation around the globe. The merchant navy made more than 25,000 voyages during the Second World War, including the vital supplying of the Soviet Union at Murmansk. Learn about why Randolph left the sugar refinery where he worked in order to serve on the high seas.

Please be advised that Memory Project primary sources may deal with personal testimony that reflect the speaker’s recollections and interpretations of events. Individual testimony does not necessarily reflect the views of the Memory Project and Historica Canada.

Between 1978 and 2001, at least 65 women disappeared from Vancouver’s Downtown Eastside. Robert Pickton, who operated a pig farm in nearby Port Coquitlam, was charged with murdering 26 of the women. He was convicted on six charges and sentenced to life in prison. In a jail cell conversation with an undercover police officer, Pickton claimed to have murdered 49 women. The murders led to the largest serial killer investigation in Canadian history, and Pickton’s farm became the largest crime scene in Canadian history. The case became a flash point in the wider issue of missing and murdered Indigenous women and girls in Canada. In 2012, a provincial government inquiry into the case concluded that “blatant failures” by police — including inept criminal investigative work, compounded by police and societal prejudice against sex trade workers and Indigenous women ­— led to a “tragedy of epic proportions.”

Warning: This article contains sensitive material that may not be suitable for all audiences.

During the first half of the 20th century, poliomyelitis, a.k.a. polio or “The Crippler,” hit Canada harder than anywhere else. Successive polio epidemics peaked in a national crisis in 1953. By that time, however, scientists at Connaught Medical Research Laboratories of the University of Toronto had made key discoveries that enabled American medical researcher and virologist Jonas Salk to prepare the first polio vaccine. Connaught Labs also solved the problem of producing the vaccine on a large scale. Canada went on to play an important role in the development of the oral polio vaccine and international efforts to eradicate the disease.

Click here for definitions of key terms used in this article.

The Canadian Red Ensign was the de facto Canadian national flag from 1868 until 1965. It was based on the ensign flown by British merchant ships since 1707. The three successive formal designs of the Canadian Red Ensign bore the Canadian coats of arms of 1868, 1921 and 1957. In 1891, it was described by the Governor General, Lord Stanley, as “the Flag which has come to be considered as the recognized Flag of the Dominion both afloat and ashore.” Though it was never formally adopted as Canada’s national flag, the Canadian Red Ensign represented Canada as a nation until it was replaced by the maple leaf design in 1965.

Marguerite Marie “Marge” Plante left Alberta to join the Women’s Division of the Royal Canadian Air Force, serving as a timekeeper and typist during the Second World War. Read and listen she describes her enlistment, the death of her brother in Italy, interacting with prisoners of war, and the V-E Day celebrations.

Please be advised that Memory Project primary sources may deal with personal testimony that reflect the speaker’s recollections and interpretations of events. Individual testimony does not necessarily reflect the views of the Memory Project and Historica Canada.

Nellie Rettenbacher joined the Canadian Women’s Army Corps in June 1943 and served until 1946 as a military police officer. As a corporal during the Second World War, she spent her time enforcing leave passes and military decorum among other enlisted women, many of whom she stayed in touch with after the war. Read and listen to Rettenbacher’s story as she explains her duties, friendships, and experiences in the military.

Please be advised that Memory Project primary sources may deal with personal testimony that reflect the speaker’s recollections and interpretations of events. Individual testimony does not necessarily reflect the views of the Memory Project and Historica Canada.

Mercantilism is an economic theory and policy practised during Canada’s colonial periods. The theory of mercantilism holds that there is a fixed amount of wealth in the world. A nation’s wealth is thus dependent on exporting (selling to other countries) more than it imports (buying from others). European nations — including France and England (later Great Britain) — used this system to their advantage from the 16th century through the mid-19th century. The purpose was to extract as much wealth as possible from the colonies without investing much into them. The Atlantic slave trade is also inextricably linked to mercantilism. (See Black Enslavement in Canada.)

Roy Trevor Gilbert Heron was a member of the merchant navy before joining the Army in 1942 as a Royal Electrical and Mechanical Engineer. Roy excelled on his Army examinations but because he was Black he was never made an officer. Learn about Roy’s experiences as an engineer with the Army.

Please be advised that Memory Project primary sources may deal with personal testimony that reflect the speaker’s recollections and interpretations of events. Individual testimony does not necessarily reflect the views of the Memory Project and Historica Canada.

The Underground Railroad was a secret network of abolitionists (people who wanted to abolish slavery). They helped African Americans escape from enslavement in the American South to free Northern states or to Canada. The Underground Railroad was the largest anti-slavery freedom movement in North America. It brought between 30,000 and 40,000 fugitives to British North America (now Canada).

This is the full-length entry about the Underground Railroad. For a plain language summary, please see The Underground Railroad (Plain-Language Summary).

James Eagle served in the Royal Canadian Regiment during the Korean War. He was one of several hundred Indigenous soldiers from Canada to serve in the conflict. James experiences nighttime raids during which two Canadians were captured, and the accidental death of his friend on base. Read and listen to his testimony as he describes his experiences in Korea, from training, to building a school, to interacting with locals.

Please be advised that Memory Project primary sources may deal with personal testimony that reflect the speaker’s recollections and interpretations of events. Individual testimony does not necessarily reflect the views of the Memory Project and Historica Canada.

Claude Petit joined the Army when he was fifteen years old. He enlisted with his cousin in Regina, Saskatchewan. Claude served in the Korean War and his arm was wounded by shrapnel from mortar fire during an engagement with the Chinese. Read and listen to Claude’s story as he talks about his experience on the frontlines of the Korean War.

Please be advised that Memory Project primary sources may deal with personal testimony that reflect the speaker’s recollections and interpretations of events. Individual testimony does not necessarily reflect the views of the Memory Project and Historica Canada.

Samuel Hearns joined the army on 28 May 1951 and served until his retirement in 1974. Samuel has since become an eagle staff carrier during the powwows he helps organize. Read and listen to Samuel’s testimony of how he met his wife during his first tour and his service as a peacekeeper in Germany, Vietnam, Cyprus, and in Quebec in 1970 during the October Crisis.

Please be advised that Memory Project primary sources may deal with personal testimony that reflect the speaker’s recollections and interpretations of events. Individual testimony does not necessarily reflect the views of the Memory Project and Historica Canada.