supervisory department; control division; operational unit
A department within a company or organization responsible for overseeing and coordinating operations, often with a supervisory or controlling function.
The supervisory department manages the performance of all branch offices.
The control division will take charge of the new project.
Compound of 統括 (とうかつ, 'unification, overall control') and 部 (ぶ, 'department, division'). The term is a modern business coinage.