2 1 century is an important period for the Chinese nation to achieve great rejuvenation, an era of rapid development of high-tech revolution represented by information technology and biotechnology, an era of increasing globalization of economy, politics and culture and accelerated development of knowledge economy, and an important period for China to comprehensively promote the reform of market economic system and realize the strategic goal of socialist modernization. Under this new historical condition, the ideological characteristics, mode of thinking and behavior of contemporary college students have undergone new changes under the influence of social changes. So what should contemporary college students do for national defense? Obviously, China has a strong army, so we don't need college students to carry it for the time being. But the threat of war cannot be forgotten in peacetime, which is also something that contemporary college students must bear in mind.

As a contemporary college student, we should first clearly realize that national defense education belongs to the category of basic quality education in the whole education system of colleges and universities. Studying military theory seriously can not only strengthen the concept of national defense, but also improve the comprehensive quality of college students to a great extent. The Central Committee of the Communist Youth League once conducted a sample survey of college students in Shanghai. More than 90% of college students think that the territory of China is only over 9.6 million square kilometers, and less than 10% can say that the sea area of China is over 3 million square kilometers. Many college students don't know the basic concepts of territorial sea, continental shelf and exclusive economic zone. Contemporary college students should first fully understand the knowledge of national defense, recognize the international situation in the world today, deepen their understanding of the significance of national defense and deepen their awareness of national defense. This is not only the responsibility of college students, but also the requirement of patriotism in the new era. We should also be able to stand up when the country needs it and actively participate in the national defense cause to safeguard the peace of the motherland.

The most direct way to join the national defense cause is to respond to the call of conscription and become a glorious PLA soldier. As we all know, with the advent of the information age and the wide application of information technology in the military, information warfare, as a new form of war, will become the main manifestation of the 2 1 century war. Information-based war is a war dominated by information and using information weapons and equipment. As contemporary college students, they are at the forefront of information science and learning the most advanced scientific knowledge. The so-called information war is knowledge war. There are calls for conscription every year, and contemporary college students are also one of the high-quality sources of conscription. They are not only full of vitality, but more importantly, they have advanced scientific and cultural knowledge. I believe that college students' active participation in the army will definitely contribute to the cause of national defense.

National defense construction must rely on national construction, and national construction cannot be separated from the participation of the whole people. Comrade Deng Xiaoping once said, "Science and technology are the primary productive forces". Only with the development of science and technology and the improvement of productivity will the country be strong. In the process of developing productive forces, college students, as a group receiving higher education, will inevitably play a powerful role in promoting. As contemporary college students, they should seriously study scientific knowledge and technology, aim high, be brave in making progress and study hard so that they can devote themselves to more meaningful construction in the future. Looking at the world and facing the future, contemporary college students will become a new force in building an innovative country, constantly improve themselves and ensure that China will always be invincible in the fierce international competition. At the same time, we should constantly enhance our awareness of self-innovation and practice. Only by constantly practicing in learning and increasing knowledge in practice can we grow up and make better contributions to national construction.

College students don't have to join the army, but they should be concerned about their home country and the world, and always be ready to stand up and defend their home country when the motherland needs it; Consciously accept military training, study military theory courses and abide by national laws and regulations. College students are in a critical period of forming their world outlook, outlook on life and values. We should strive to overcome the difficulties in our study and life, hone our strong will and establish a correct three views. A strong teenager makes a strong country. It is necessary to link personal destiny with the future of the motherland and understand the correct concept that the country is weak and ashamed, and the country is strong and arrogant.