The biggest revelation from studying the history of national defense is that we must have a sense of hardship. With the help of the study of national defense history, we can also improve people's understanding of national defense work and cultivate people's patriotism, so I think it is of great practical significance to study China's national defense history.

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Studying the history of national defense can improve our sense of urgency. The ancients often said, born in sorrow, died in happiness. During the historical development of China, we were invaded by foreign enemies in different dynasties. When foreign enemies invade, it will be difficult to deal with without a strong national defense force. This point, through the wars that have happened in past dynasties, people can clearly realize it. Studying the history of national defense can obviously improve people's sense of urgency and really pay attention to national defense. History is likely to repeat itself. If China really wants to become a world economic power, it needs a stable internal environment, which needs a strong national defense to ensure. Therefore, after studying the history of national defense, people will have a sense of urgency and will actively support national defense construction.

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It is helpful to improve people's understanding of national defense work and has important practical significance for promoting social and economic development. However, in peacetime, many people lack a correct understanding of national defense work, and some even mistakenly believe that national defense construction is a waste of money, which is a very wrong understanding. With the help of the study of national defense history, it is of great practical significance for people to see the painful lessons in history and improve their understanding of national defense work. Only by fully understanding the significance of this work can we support national defense construction.

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It helps to improve people's patriotism, and the important task of national defense work is to safeguard the integrity of the country and territory to the maximum extent, which is closely related to everyone's daily life. Therefore, with the help of the study of national defense history, people's patriotism can be well improved.

In a word, it is very necessary to study the history of national defense. Only by studying can people deepen their understanding of history, have a sense of hardship, actively support and participate in the cause of national defense construction, and constantly improve people's patriotism.