In Japan, where disasters are frequent—including earthquakes such as the 2011 Great East Japan Earthquake and the 2024 Noto Peninsula Earthquake, typhoons such as Typhoon Faxai in 2019, and mass casualties caused by chemical agents such as the 1995 Tokyo subway sarin gas attack—educating medical students about disaster medicine is extremely important. The revised core curriculum for medical schools in Japan, introduced in 2022, calls for lectures on disaster medicine (particularly on the role of physicians in natural disasters, basic systems and laws regarding healthcare crises, and the significance of disaster insurance medical care). However, this proportion is considered extremely small. Currently, the amount of time allocated to disaster education during the six years of medical education at a typical Japanese university is estimated to be no more than 10 h, which is extremely limited. The reason for this is that only approximately two-thirds of the lecture hours conformed to the core curriculum. While universities can set their own curricula for the remaining time, the content that reflects their unique characteristics varies, and they design their curricula accordingly. The National Defense Medical College, which trains medical officers for the Japan Self-Defense Forces (JSDF), which frequently deploys to disaster areas, offers a total of 43 hours of lectures on disaster medicine in its "Defense Medicine Course," the only one of its kind in Japan, designed to equip medical officers with the necessary skills. These additional hours utilize a university-specific timeslot outside the core curriculum, providing more education on disaster medicine than other medical students. As an example of educational benefits, fourth-year medical students regularly compile research results on disaster medicine, some of which they present at domestic medical conferences, allowing constructive discussions with the participants. Furthermore, lectures and practical training on CBRNE disasters were conducted, which have been particularly helpful in deepening students' understanding of radiation disasters. [Conclusion] This paper provides an overview of the disaster medicine education provided to medical students at the National Defense Medical College. In Japan, where disaster response opportunities are frequent, the further enhancement of disaster medical education is desirable.