deputy general manager; deputy director-general; assistant commissioner
A deputy or assistant head of a headquarters, bureau, or department. Used in corporate, government, and organizational contexts.
He is overseeing the new project as deputy general manager.
The responsibilities of the deputy director-general vary depending on the organization.
本部長 is the head of the headquarters, while 副本部長 is the deputy or assistant head.
副部長 is a deputy department head, typically one level below 副本部長 in larger organizations.
Compound of 副 (ふく, 'vice-, deputy') + 本部 (ほんぶ, 'headquarters') + 長 (ちょう, 'chief, head').