2020 年 37 巻 p. 391-400
U.S. force's disaster relief operation in the Great East Japan Earthquake was named Operation Tomodachi. The Operation is considered as model of military mutual cooperation for disaster relief between Japan and U.S.. Therefore, this paper tries to examine Operation Tomodachi and clarify the lessons and issues of Japan-U.S. disaster relief cooperation in case of future huge disaster such as the Great Nankai Trough Earthquake. In conclusion of this paper, establishing communication-line, effective use of U.S. Force's unique capability and assets, and multilateral cooperation between the U.S. forces, the Self-Defense Forces and other Japanese actors especially local authorities are importante for imploving Japan-U.S. disaster relief cooperation.