The National Defence Act is a Canadian law that outlines the organization and governance of the country's military forces. It establishes the framework for the Canadian Armed Forces, including the roles and responsibilities of the Canadian Army, Royal Canadian Navy, and Royal Canadian Air Force. The Act also provides guidelines for military operations and the administration of defense policies. Originally enacted in 1927, the National Defence Act has undergone several amendments to adapt to changing security needs. It plays a crucial role in ensuring that Canada can respond effectively to domestic and international threats, maintaining national security and sovereignty.