Abstract 1. On the eve of the Double Tenth Day, which marks the 99th birthday of the Republic of China, and also coincides with the 65th year since the end of the Japanese occupation of Taiwan, this is truly an exceptional time. 2. To ensure the safety of our nation, and to deter our enemies from invading by force, it is imperative that we display a sense of national unity in terms of our willingness to engage the enemy and our combat capabilities. 3. During the commemoration of the Double Tenth Day and the end of the Japanese occupation, the author would like to point out the importance of being continually vigilant of the threat, and the present article discusses the four following points. (1)a solid psychological defense based on the concept of "Total Defense" (2)development of combat morality in our Armed Forces. (3)strengthening National Defense education in order to elevate the knowledge of the general public. (4)building a combined collective understanding to ensure national safety. 4. Our nation exist in the 21st century strategic environment, and in the face of a continuous threat from the PRC military, we must build on our collectively sense of unity andfocus on our national identity, to effectively fight the enemy and defend the national defense safety of our territories. The splendor of the October Festival is only meaningful if all the people of Taiwan can enjoy the prosperity that comes with the peace and live without the fear of war.