National Defence refers to the measures and strategies a country employs to protect its sovereignty, territory, and citizens from external threats. This includes maintaining armed forces, such as the Army, Navy, and Air Force, which are responsible for defending the nation against military aggression. In addition to military capabilities, National Defence encompasses intelligence gathering, cybersecurity, and diplomatic efforts to prevent conflicts. Countries often collaborate through alliances, such as NATO, to enhance their security and share resources. Effective National Defence ensures a nation's stability and safety in an increasingly complex global environment.