Bangladesh Administrative Service

The Bangladesh Administrative Service (BAS) is the premier civil service cadre of the Bangladesh Civil Service, which formulates and executes the policies of the government of the People's Republic of Bangladesh, of which it is an inseparable part. BAS officers hold all senior and middle-ranking administrative posts, such as the permanent heads (non-political) of government ministries, as well as divisions and departments within ministries, in the central secretariat headquartered in Dhaka.

Source: Wikipedia — Bangladesh Administrative Service (CC BY-SA 4.0)