Chief of Staff, Joint Staff

The Chief of Staff, Joint Staff (Japanese: 統合幕僚長, Hepburn: Tōgō Bakuryō-chō), formerly known as the Chairman of the Joint Staff Council from 1954 to 2006, is the highest-ranking military officer and head of the overall Operational Authority (through Joint Staff Office) over the Japan Self-Defense Forces (JSDF) and its three service branches: the Japan Ground Self-Defense Force, the Japan Maritime Self-Defense Force, and the Japan Air Self-Defense Force. The Chief of Staff, Joint Staff is primarily held by rank of a four-star rank of General or Admiral, the highest rank in the Japan Self-Defense Force.

Source: Wikipedia — Chief of Staff, Joint Staff (CC BY-SA 4.0)