Central Armed Police Forces sit under the Ministry of Home Affairs, not MoD. That single line kills half the wrong options in this corner of the syllabus.
| Force | Usual Prelims hook |
|---|---|
| CRPF | Internal security, counter-insurgency, election and law-and-order duties |
| BSF | India-Pakistan and India-Bangladesh borders |
| ITBP | India-China (Tibet) frontier |
| SSB | India-Nepal and India-Bhutan borders |
| CISF | Industrial and critical infrastructure security |
| Assam Rifles | MHA on paper; Army often holds operational control in the North-East |
Indian Coast Guard
Coast Guard is an armed force of the Union, but it is not one of the three services. Regional headquarters:
| Region | HQ |
|---|---|
| Western Region | Mumbai |
| Eastern Region | Chennai |
| North-East Region | Kolkata |
| Andaman and Nicobar Region | Port Blair |
| North-West Region | Gandhinagar |
Assam Rifles is the awkward dual-control example examiners enjoy: administrative link with MHA, operational picture often with the Army in the North-East.