Assistant commandant

General J. N. Chaudhuri recommended to raise the officer cadre of the Border Security Force on lines of the military hierarchy and hence assistant commandant, which otherwise is an appointment in most countries, came up as the junior-most rank in the hierarchy of Gazetted officers of the Border Security Force.

For its exclusivity and unique hierarchical association with Indian Paramilitary Forces of India, assistant commandant, for comparative understanding, is equivalent to the ranks of assistant commissioner of police (ACP), deputy superintendent of police (DSP), and captain in the Indian Army.

Assistant commandants in Central Armed Police Forces (CAPF) are selected through a competitive exam conducted by Union Public Service Commission (UPSC) annually.

Assistant commandants are mandated to command companies and Direct Action Teams (DATs) in various CAPFs and law enforcement agencies, They are also sent on deputations to various organizations such as RAW, NSG, SPG, NIA, IB, CBI, NDRF, NCB, State Armed Police Force (DRG, Jharkhand Jaguars, Bihar military police, IRB, UP/MP STFs, etc.).

Sub-inspectors are recruited through competitive examination conducted by Staff Selection Commission and they are referred to as DASOs (directly appointed subordinate officers).