The office of the JS & CAO is attached to the Ministry of Defence and deals with the recruitment and provision of civilian manpower for the Service Headquarters of Indian Armed Forces and all Inter-Service Organisations.
The Joint Secretary is the Cadre Controlling Officer for Armed Forces Civilian Employees. The office provides support to service headquarters in terms of Office Accommodation, Maintenance of buildings and Office
contingency TA/DA. The office is also responsible for management and allotment of Defence Pool accommodation.