1, the main element, the main body of national defense is the country;

2. Object elements: the object of national defense is foreign invasion and armed subversion;

3. Purpose factor: The purpose of national defense is to defend the sovereignty, unity, territorial integrity and security of the country;

4. Means elements: The means of national defense are military activities, as well as military-related political, economic, diplomatic, scientific and technological, educational and other activities.

Extended data:

National defense achievements:

Under the background of great development and prosperity of socialist culture, the tide of military culture is surging and the strong wind is surging. Party committees and grass-roots units at all levels take the overall situation into consideration, scientifically plan the construction of military culture, and incorporate the development of advanced military culture as a strategic project, a systematic project and a basic project into the blueprint for the overall planning of military construction, so as to make the construction of military culture meet the central task, the need to win and the need of the battlefield.

Taking the core values of contemporary revolutionary soldiers as the main line, it runs through the whole process of military culture development and all fields of army building, constantly releasing new enthusiasm: the Nanjing Military Region organized 100 political commissar of brigade and regiment units to go to Jinggangshan to find roots and seek a "road map" for cultivating people with culture.

On-the-spot evaluation of grass-roots cultural work courses in military academies represents the highest level of excellent courses in grass-roots cultural work courses in military academies, and shows the strong vitality of this young discipline with colorful groups; Shahe 150 people, the backbone of propaganda and culture directly under the General Political Department, started discussions around the theme of "being the vanguard of developing advanced military culture", and the sense of urgency, responsibility and mission rose in the hearts of the students.

Vigorously develop advanced military culture and become a multiplier to promote the scientific development of army building and the generation of combat effectiveness. "Li Jian -2007" exercise, "Li Bing -2008" exercise, 2008 Wenchuan earthquake relief and support for the Beijing Olympic Games, "Leap -2009" exercise, 2009 National Day military parade in the capital, "Peace Mission -20 10" joint anti-terrorism military exercise of the armed forces of SCO member States, 20/KLOC- exist

In carrying out diversified military tasks, the officers and men of the whole army handed over excellent answers, and also created a new moral highland of national spirit such as fighting SARS spirit, earthquake relief spirit and manned space flight spirit.

Baidu encyclopedia-national defense

People's Daily Online-Review of achievements in national defense and army building since the 16th National Congress 1 1