Why this matters now
This is a high-yield Prelims topic — distinguishing the CAPFs and their roles, and the intelligence agencies (internal vs external). It underpins all internal-security topics.
Armed forces and CAPFs
The Armed Forces (Army, Navy, Air Force) defend against external threats. For internal security, the Central Armed Police Forces (CAPFs), under the MHA, are key:
| Force | Primary role |
|---|---|
| CRPF | Internal security, law & order, anti-Naxal operations |
| BSF | Guarding the Pakistan/Bangladesh borders |
| CISF | Security of industrial units, airports, key installations |
| ITBP | India-China border (high altitude) |
| SSB | Nepal and Bhutan borders |
Specialised units
The National Security Guard (NSG) is the elite counter-terror/commando force (“Black Cats”). The Assam Rifles guards the Myanmar border and aids counter-insurgency. Special Protection Group (SPG) protects the PM.
Intelligence agencies
India’s intelligence is split by domain: the Intelligence Bureau (IB) handles internal intelligence; the Research and Analysis Wing (RAW) handles external intelligence; the National Investigation Agency (NIA) investigates terror; NATGRID links databases; the NTRO provides technical intelligence; and the Multi-Agency Centre (MAC) coordinates them.
Significance
A clear division of labour — defence (armed forces), internal security (CAPFs), specialised response (NSG) and intelligence (IB/RAW/NIA) — with strong coordination, is essential to meeting complex, interlinked threats.
UPSC angle
Match each CAPF to its role (CRPF-internal/anti-Naxal; BSF-Pak/Bangladesh; CISF-installations; ITBP-China; SSB-Nepal/Bhutan), and IB (internal) vs RAW (external). NSG = counter-terror.
Frequently asked questions
What is the difference between IB and RAW?
The Intelligence Bureau (IB) handles internal intelligence; the Research and Analysis Wing (RAW) handles external intelligence.
What are the Central Armed Police Forces?
Forces under the MHA for internal security and border guarding — CRPF, BSF, CISF, ITBP and SSB.
What is the National Security Guard?
The NSG (“Black Cats”) — India’s elite counter-terrorism and commando force.
Which force conducts most anti-Naxal operations?
The CRPF, India’s largest CAPF, dedicated to internal security and law and order.