Section 18(2)(a) in The Army And Air Force (Disposal Of Private Property) Rules, 1953
(a)if the deceased was serving with his corps, department, detachment or unit, by the commanding officer of the corps, department, detachment or unit, not being below the rank of Lieutenant Colonel or Wing Commander; if he is below that rank, then by the Brigade or equivalent Commander, the Air Officer Commanding Command or in the case of persons subject to the Army Act, 1950, the Station Commander;