The concept of national defense

National defense refers to the military activities carried out by a country to guard against and resist aggression, stop armed subversion, terrorists, foreign enemies and other emergencies, and safeguard national sovereignty, unity, territorial integrity and security, as well as military-related political, economic, scientific, technological, diplomatic and educational activities.

2. The significance of national defense: it is survival science and national defense. It refers to the military and military-related political, diplomatic, economic and cultural construction and struggle to defend national sovereignty and territorial integrity and resist foreign aggression and subversion. National defense comes into being with the emergence of the country and serves the national interests.

Modern national defense takes military forces as the core, including related non-military forces; It attaches importance to the war potential of the country, especially the mobilization efficiency in wartime; It is also a competition of comprehensive national strength based on economy and science and technology. The modern army is an armed group with intensive knowledge and technology, and it emphasizes quality over "sea tactics". The duty of national defense in wartime is actual combat, and the goal is victory.

The object of national defense refers to the behavior that national defense should guard against, resist and stop. According to the definition of People's Republic of China (PRC)'s National Defense Law, the object of national defense is "aggression" and "armed subversion". What national defense should guard against and resist is "aggression", and what national defense should stop is armed subversion.

The internationalization of national defense is mainly manifested in the following aspects: domestic and foreign countries, and national defense and international relations are closer; World peace and war, international economic prosperity and recession, all directly affect the country and national defense construction; The international and surrounding situation is turbulent, and the country must pay more attention to national defense. Once threatened or invaded by foreign countries, it must mobilize national defense forces to meet external challenges.

National defense science and technology is one of the important symbols to measure a country's comprehensive national strength. After more than 50 years of construction and development, China has established a complete and comprehensive scientific research and experimental production system including electronics, ships, weapons, aviation, aerospace and nuclear energy.

A large number of scientific research achievements with domestic or international advanced level have been achieved, which has made important contributions to the modernization drive and the practical enhancement of China's comprehensive national strength.

Since the Third Plenary Session of the Eleventh Central Committee of the Communist Party of China, especially since 1985, the CPC Central Committee, the State Council and the Central Military Commission have clearly put forward the basic guiding principle that "the combination of a lean standing army and a strong reserve force is the only way to build a modern national defense". As a great strategic force, China's national defense reserve force has been paid more and more attention by the Party and the country.