Overview
An inspector general is an investigative official in a civil or military organization. The plural of the term is "inspectors general".
Australia
The Inspector-General of Intelligence and Security (Australia) (IGIS) is an independent statutory office holder who reviews the activities of the six Australian intelligence agencies under IGIS jurisdiction.
The Inspector-General of the Australian Defence Force conducts internal reviews of administrative action, investigates Service Police professional standards breaches and other significant incidents including Service deaths, and reviews and audits the operation of the military justice system independently of the chain of command. The Inspector-General Australian Defence Force is appointed by the Minister for Defence.
Bangladesh
The chief of police of Bangladesh is known as the inspector general of police. He is from the Bangladesh Civil Service police cadre. The current inspector general of police is Dr. Benazir Ahmed, and his predecessor was Dr. Javed Patwary. There is another temporary post of inspector general of police, known as Pulish Shômônnoyôk or "police coordinator", currently held by Bivuti Vooshon Choudhury.
From Wikipedia (CC BY-SA 4.0).