
In 1970, Prime Minister Trudeau proclaimed martial law in Quebec, sending troops to guard federal property in the Ottawa region and arresting FLQ representative Robert Lemieux. This was in response to the kidnapping of British diplomat James Cross and Quebec Labour Minister Pierre Laporte by secessionists. However, it is important to note that the War Measures Act, which was invoked during this time, fell short of enacting martial law as the military did not administer justice and remained in a support role to the civil authorities.
| Characteristics | Values |
|---|---|
| What is martial law? | The replacement of civilian government by military rule and the suspension of civilian legal processes for military powers. |
| What happened in Canada? | The War Measures Act was invoked, which allowed the government to assume emergency powers, stopping short of martial law. |
| Who did it affect? | The Act was applied to the province of Quebec, and troops were deployed to guard federal offices and employees outside of Quebec, mainly in the Ottawa area. |
| What were the consequences? | Increased powers of arrest, suspension of habeas corpus, and criticism from some Canadians about the appearance of tanks outside the federal parliament. |
| Who supported it? | All three opposition parties, including the Parti Québécois, agreed with the decision to invoke the Act. |
| Who opposed it? | René Lévesque, a columnist, politician, and future Premier of Quebec, criticized the Act as an excessive reaction. |
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What You'll Learn

The War Measures Act
In the lead-up to and during World War II, the War Measures Act continued to be used to target "enemy aliens", particularly those of Italian, German, Japanese, and Ukrainian descent. It was also used to suppress socialist and pacifist publications and organizations. The Act was brought back into force on 25 August 1939, and a state of war with Germany was declared on 10 September 1939.
In 1988, the War Measures Act was repealed and replaced by the more limited Emergencies Act, which saw its first invocation in February 2022 during the Freedom Convoy protests.
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The October Crisis
The invocation of the War Measures Act was supported by the premier of Quebec, Robert Bourassa, and the mayor of Montreal, Jean Drapeau. The Act allowed the police to arrest, interrogate, and hold anyone associated with the FLQ, leading to the detention of 497 people, 435 of whom were later released. The Quebec Ombudsman, Louis Marceau, was tasked with hearing complaints from detainees, and the Quebec government agreed to compensate any individuals who had been unjustly arrested.
The Government of Quebec also requested military aid, and Canadian Forces were deployed throughout Quebec to guard federal property and support civil authorities. While this gave the appearance that martial law had been imposed, there were key differences. The military remained in a support role, and the judicial system remained in the hands of the courts, allowing for criticism of the government. However, the sight of tanks outside the federal parliament and the abuse of powers by some police officials caused concern among Canadians.
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Military deployment
While Canada has never officially enacted martial law, the War Measures Act, a statute that allowed the government to assume emergency powers, was invoked during the October Crisis of 1970. This act gave the government increased powers of arrest and allowed for military deployment, though the military remained in a support role to civil authorities and never administered justice.
The October Crisis began when members of the Chénier Cell of the FLQ (Front de libération du Québec) kidnapped the Quebec Minister of Labour, Pierre Laporte, while he was playing football with his nephew on his front lawn. The FLQ also kidnapped British diplomat James Cross. Negotiations between the FLQ and the Canadian government over the release of the captives broke down, leading the government to issue a proclamation suspending civil liberties and outlawing the FLQ.
In response to the crisis, the federal government deployed troops to guard federal offices and employees in the Ottawa area and to protect federal property in the region. The Government of Quebec formally requested the intervention of the Canadian army in "aid of the civil power" pursuant to the National Defence Act, and the Premier of Quebec, Robert Bourassa, requested that the federal government grant Quebec "emergency powers".
The military deployment during the October Crisis gave the appearance that martial law had been imposed, but it is important to note that the War Measures Act stopped short of declaring martial law, and the military did not have the power to administer justice, which remained in the hands of the courts. However, the combination of increased powers of arrest and military presence did result in criticism from some Canadians, who found the sight of tanks outside the federal parliament disconcerting.
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Habeas corpus suspension
In Canada, habeas corpus is guaranteed by Section 10(c) of the Canadian Charter of Rights and Freedoms, which states that:
> "every one has the right on arrest or detention…to have the validity of the detention determined by way of habeas corpus and to be released if the detention is not lawful."
This means that, in Canada, a person can challenge their detention or imprisonment by requesting a court to review the legality of their detention, and if found to be unlawful, they must be released. This is a fundamental human right, enshrined in the 1789 Declaration of the Rights of Man and of the Citizen, and is also found in the legal frameworks of Germany, the United States, several Commonwealth countries, and India.
In Canada, habeas corpus applications can be filed with a trial court in criminal cases, and an appeal can be made to the highest provincial courts, the Courts of Appeal. The Supreme Court has recognised the right of individuals detained on national security grounds to seek a writ of habeas corpus, even if they are not charged with a crime.
While Canadian law allows for the suspension of habeas corpus, it can be challenged on constitutional grounds. However, even if a court declares such a law to be unconstitutional, Parliament can override this decision if it expressly declares that the law in question operates "notwithstanding the provisions of the Charter". Despite this provision, it has never been invoked at the federal level.
Historically, the writ of habeas corpus was suspended for several years following the Battle of Fort Erie (1866) during the Fenian Raids, but this was only applied to suspects in the Thomas D'Arcy McGee assassination.
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Prime Minister Trudeau's involvement
In 1970, during the October Crisis, Prime Minister Pierre Trudeau invoked the War Measures Act, which allowed the government to assume emergency powers, stopping short of declaring martial law. This was in response to the kidnapping of British diplomat James Cross and Quebec Labour Minister Pierre Laporte by the Front de libération du Québec (FLQ). The Act granted the government increased powers of arrest and allowed for the deployment of troops to guard federal offices and employees outside Quebec, particularly in the Ottawa region. However, the military remained in a support role, and civil liberties such as criticism of the government were still permitted.
The War Measures Act was controversial, and some, like future Quebec Premier René Lévesque, criticised it as an excessive reaction. The Act led to the suspension of habeas corpus, allowing for the detention of individuals without immediate charges and restricting their access to legal counsel. Despite the Act's invocation, standard civil liberties were not entirely suspended, and the military did not administer justice, which remained under the purview of the courts.
In February 2022, Canada faced another crisis when protests by truckers, known as the "Freedom Convoy", led to blockades in Ottawa and other cities. At this time, Prime Minister Justin Trudeau, son of Pierre Trudeau, invoked the Emergencies Act, which replaced the War Measures Act in 1988. This Act allowed the government to cut off protesters' funding, reinforce law enforcement, and freeze protesters' bank accounts. Importantly, it did not include the deployment of the military, and Prime Minister Justin Trudeau emphasised that he remained against intervention by the armed forces.
While some on social media characterised this as a declaration of "near martial law", this claim is inaccurate. Martial law involves the replacement of civilian government by military rule and the suspension of civilian legal processes, which was not the case in the 2022 invocation of the Emergencies Act. Prime Minister Justin Trudeau's actions during this crisis did not meet the definition of martial law, and he explicitly avoided the use of military force.
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Frequently asked questions
Yes, martial law was declared in Canada during the October Crisis of 1970.
Martial law is the replacement of civilian government by military rule and the suspension of civilian legal processes for military powers.
During the October Crisis, members of the Chénier Cell of the FLQ kidnapped the Quebec Minister of Labour, Pierre Laporte. This led to the invocation of the War Measures Act, which allowed the government to assume emergency powers.
The War Measures Act was a statute that allowed the Canadian government to assume emergency powers, stopping short of martial law. This meant that the military did not administer justice, which remained in the hands of the courts.
Yes, in February 2022, the Emergencies Act, which replaced the War Measures Act in 1988, was invoked amidst the Freedom Convoy protests.































