First of all, national defense education can improve national defense awareness and safety awareness. By learning national defense knowledge, people can understand the importance of national security and how to protect themselves and their families in the face of threats. This understanding can not only help individuals better cope with emergencies, but also enhance the sense of security of the whole society. In China, national defense education has become a part of compulsory education. With the popularization of schools and communities, more and more people begin to pay attention to national security issues.

Secondly, national defense education helps to cultivate the future guardians of the country. Military talents are an important guarantee for national security and development. Through national defense education, teenagers can understand the life and training of the army and stimulate their interest in military undertakings. In addition, national defense education can also train outstanding young people to join the army and deliver fresh blood to the country. In China, there are many excellent military academies, such as the National Defence University and the Army Academy of the Chinese People's Liberation Army, which have trained a large number of military talents and made great contributions to the prosperity and development of the country.

Third, national defense education can promote national unity and social harmony. In the face of foreign invasion, the people of all ethnic groups in China will unite and jointly resist aggression. This national spirit and national cohesion are the important cornerstones of national security and development. Through national defense education, people can have a deeper understanding of the history and culture of the Chinese nation and enhance their sense of national pride and identity. At the same time, national defense education can also help people establish correct values, carry forward socialist core values and promote social harmony and stability.

Finally, national defense education can improve the country's international status and influence. A strong country needs a strong national defense force to safeguard its sovereignty and territorial integrity. By strengthening national defense education, a country can train more military talents and technical experts and improve its national defense strength. This will help to improve the country's international status and influence and make the country play a greater role in international affairs.

In a word, national defense education is of great significance in modern society. It can not only improve people's awareness of national defense and security, but also cultivate the future guardian of the country, promote national unity and social harmony, and improve the country's international status and influence. Therefore, we should attach importance to national defense education, let more people understand the importance of national security and make contributions to the prosperity and development of the country.