At its peak the AIB contained men from ten individual services and controlled or coordinated eight separate organisations. The role of the AIB was to obtain information  about the enemy, "to weaken the enemy by sabotage and destruction of morale and to lend aid and assistance to local effort to the same end in enemy territories." One member of the AIB was Alfred Deakin Brookes, who went on to become the first head of the Australian Secret Intelligence Service in May 1952.
At its peak, the AIB included members from ten distinct services and managed or coordinated eight separate organizations. The AIB's role was to gather information about the enemy, "to weaken them through sabotage and morale destruction, and to assist local efforts against them." One member of the AIB, Alfred Deakin Brookes, would eventually become the first head of the Australian Secret Intelligence Service in May 1952.