Defending the State or what can be called national resilience is an important thing in state life. The attitude of defending the country is something that must be owned and realized by the people, especially the younger generation who will be the future leaders of the nation. Article 27 paragraph (3) of the 1945 Constitution states that "every citizen has the right and obligation to participate in efforts to defend the State". This research uses the literature review method which is a systematic, explicit and reproducible method for evaluating and identifying research works. The aim of this research is that citizens, especially the younger generation, must have a responsibility to defend the country and prepare students to become good citizens. The results of the discussion show that to realize the 1945 Constitution concerning National Defense, the government provides citizenship education to help educate citizens, especially the nation's next generation. Through citizenship education, the descendants of the Indonesian people will be able to understand, analyze and answer the challenges faced in society, nation and state. As well as being sustainable and in accordance with the principles and ideals of the nation as intended in the preamble to the 1945 Constitution. It is hoped that awareness of defending the State or national security can be instilled in the minds of all Indonesian people, especially in this technological era. Because in the technological era there are several external threats that are sometimes overlooked.
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