This is a database of source documents that trace the footsteps of defence policy, consisting of the 'Defence Agency Historical Materials', a group of documents collected for the compilation of the Defence Agency History, and the 'Kubo Documents' and 'Ito Documents', personal documents of defence bureaucrats.

Part I: "Kubo Documents", "Ito Documents", Memoirs and Testimonies
Focusing on materials from the 1960s and 1970s, the database contains personal documents of defence bureaucrats Takuya Kubo (former Administrative Vice-Minister of Defence) and Keiichi Ito (former Director-General of the Defence Bureau and Secretary-General of the National Defence Council).
In addition, some memoirs and testimonials by defence bureaucrats and Self-Defence Force officials in the 'Defence Agency Historical Materials' are also included. The main contents cover the period from the end of the war and rearmament to the 1970s.