Which one of the following is NOT a Central Paramilitary Force under the Ministry of Home Affairs ?

1. National Security Architecture: MHA vs. MoD (basic)

Welcome to your first step in understanding how India manages its vast security apparatus! To master this, we must start with a fundamental distinction: Internal vs. External Security. In the Indian administrative setup, national security responsibilities are primarily divided between two powerhouse ministries: the Ministry of Home Affairs (MHA) and the Ministry of Defence (MoD).

The Ministry of Home Affairs (MHA) is the nodal ministry for internal security. It manages the Central Armed Police Forces (CAPF), which are responsible for maintaining law and order, counter-insurgency, and border guarding during peacetime. For instance, the CRPF is the largest CAPF and primarily assists states in maintaining law and order, while the BSF is dedicated to securing our borders. Furthermore, the MHA oversees investigative agencies like the National Investigation Agency (NIA) Indian Polity, M. Laxmikanth, National Investigation Agency, p.513 and serves as the nodal ministry for the administration of Union Territories, including Ladakh Indian Polity, M. Laxmikanth, Union Territories, p.412.

In contrast, the Ministry of Defence (MoD) is responsible for external security and defending the territorial integrity of India against foreign aggression. It controls the Indian Armed Forces (Army, Navy, and Air Force). A common point of confusion is specialized units like the Ladakh Scouts; while they operate in a sensitive border zone, they are actually a regular infantry regiment of the Indian Army and thus fall under the MoD, not the MHA. The distinction is vital because while modern threats like cross-border terrorism often merge internal and external challenges Contemporary World Politics, NCERT, Security in the Contemporary World, p.68, the administrative "command and control" remains strictly separated.

Feature	Ministry of Home Affairs (MHA)	Ministry of Defence (MoD)
Primary Focus	Internal Security & Border Management (Peacetime)	External Security & Territorial Defense (War/Aggression)
Key Forces	CAPFs (BSF, CRPF, CISF, ITBP, etc.)	Indian Armed Forces (Army, Navy, Air Force)
Specialized Units	NIA, Intelligence Bureau (IB)	Ladakh Scouts, Rashtriya Rifles

Sources: Indian Polity, M. Laxmikanth, National Investigation Agency, p.513; Indian Polity, M. Laxmikanth, Union Territories, p.412; Contemporary World Politics, NCERT, Security in the Contemporary World, p.68; Geography of India, Majid Husain, India–Political Aspects, p.51

2. Constitutional Mandate: Article 355 and Internal Security (intermediate)

At the heart of India's internal security architecture lies Article 355 of the Constitution. Unlike many other articles that grant 'powers,' Article 355 imposes a solemn duty upon the Union government. This mandate is three-fold: the Union must protect every State against external aggression, shield them from internal disturbance, and crucially, ensure that the government of every State is carried on in accordance with the provisions of the Constitution Introduction to the Constitution of India, D. D. Basu (26th ed.), DISTRIBUTION OF LEGISLATIVE AND EXECUTIVE POWERS, p.381. This article serves as the constitutional justification for the Centre to intervene in matters that are normally within a state's jurisdiction, acting as a precursor or a 'lesser' alternative to the imposition of President's Rule under Article 356. To fulfill this mandate, the Union maintains a sophisticated administrative machinery known as the Central Armed Police Forces (CAPF). These forces operate under the Ministry of Home Affairs (MHA) and are the primary tools for managing 'internal disturbance.' For instance, the Central Reserve Police Force (CRPF) is the largest wing specifically designed to assist states in maintaining law and order, while the Border Security Force (BSF) guards our international boundaries against external threats. It is important to distinguish these from the regular Indian Army; while the Army (and units like the Ladakh Scouts) falls under the Ministry of Defence, the CAPFs are civilian-governed armed forces intended for internal security and border policing. This division of labor often leads to a delicate federal balance. Under the Seventh Schedule, 'Public Order' and 'Police' are primarily State subjects (List II) Indian Polity, M. Laxmikanth(7th ed.), Federal System, p.139. However, because the Union has a constitutional duty under Article 355, it can deploy CAPFs even without a formal request from a state if the internal security situation is deemed critical. This intersection of the Union's duty and the State's legislative power—especially regarding preventive detention for the security of the state Introduction to the Constitution of India, D. D. Basu (26th ed.), FUNDAMENTAL RIGHTS AND FUNDAMENTAL DUTIES, p.137—forms the backbone of India's administrative response to security threats.

Sources: Introduction to the Constitution of India, D. D. Basu (26th ed.), DISTRIBUTION OF LEGISLATIVE AND EXECUTIVE POWERS, p.381; Indian Polity, M. Laxmikanth(7th ed.), Federal System, p.139; Introduction to the Constitution of India, D. D. Basu (26th ed.), FUNDAMENTAL RIGHTS AND FUNDAMENTAL DUTIES, p.137

3. Border Management and 'One Border One Force' Policy (intermediate)

To understand the structure of India’s administrative machinery regarding security, we must first look at the sheer complexity of our borders. India shares land borders with seven countries, ranging from the icy heights of the Himalayas to the porous deltas of the east. These borders face diverse challenges: infiltration from Bangladesh, which threatens political stability Introduction to the Constitution of India, HOW THE CONSTITUTION HAS WORKED, p.482, and frequent ceasefire violations along the Line of Control (LoC) with Pakistan Geography of India, India–Political Aspects, p.41. Managing such varied terrain requires more than just a generic police force; it requires specialized agencies with a clear command structure.

Historically, India’s border management was fragmented, with multiple agencies often overlapping in the same sector. This led to a lack of accountability and confusion during crises. Following the Kargil War in 1999, a high-level Group of Ministers (GoM) recommended the 'One Border One Force' (OBOF) policy. The logic is simple yet profound: for every specific international border, one single specialized force should be designated as the lead agency. This ensures accountability, avoids duplicity of command, and allows a force to develop deep expertise in the specific geography and culture of that border region.

Under this policy, the responsibility for India's borders is distributed among various Central Armed Police Forces (CAPFs), which operate under the administrative control of the Ministry of Home Affairs (MHA). It is important to distinguish these from the Indian Army, which falls under the Ministry of Defence (MoD) and primarily handles the Line of Control (LoC) and Line of Actual Control (LAC) during active hostilities or heightened tensions.

Border	Primary Guarding Force	Administrative Control
Pakistan & Bangladesh	Border Security Force (BSF)	Ministry of Home Affairs
China (LAC)	Indo-Tibetan Border Police (ITBP)	Ministry of Home Affairs
Nepal & Bhutan	Sashastra Seema Bal (SSB)	Ministry of Home Affairs
Myanmar	Assam Rifles (AR)	MHA (Admin) / MoD (Operational)

Effective border management also aligns with India's broader Foreign Policy goals, such as the Gujral Doctrine, which emphasizes respecting the territorial integrity and sovereignty of our neighbors Indian Polity, Foreign Policy, p.610. By having a dedicated force like the SSB on the Nepal border, which is relatively peaceful, India can maintain a "soft touch" approach while still ensuring national security.

Sources: Introduction to the Constitution of India, HOW THE CONSTITUTION HAS WORKED, p.482; Geography of India, India–Political Aspects, p.41; Indian Polity, Foreign Policy, p.610

4. Internal Security Challenges: LWE and Insurgency (intermediate)

To understand the administrative machinery managing internal security, we must distinguish between the Ministry of Home Affairs (MHA) and the Ministry of Defence (MoD). While the MoD handles external aggression, the MHA is the nodal ministry for internal security, overseeing the Central Armed Police Forces (CAPF). These forces, such as the Central Reserve Police Force (CRPF) and the Border Security Force (BSF), are the frontline against Left-Wing Extremism (LWE) and regional insurgencies. For instance, the CRPF is the primary force deployed for anti-Naxal operations and assisting states in maintaining law and order, while the BSF primarily secures India's international borders. Historically, several regions have faced secessionist movements or insurgencies driven by tribal or ethnic identities. Notable examples include the National Socialist Council of Nagaland (NSCN) and the People's Liberation Army in Manipur Indian Polity, M. Laxmikanth, p.603. It is critical to distinguish these CAPFs from specialized units of the regular Indian Army. For example, the Ladakh Scouts is an infantry regiment of the Indian Army specifically trained for high-altitude mountain warfare. Unlike the CRPF or BSF, the Ladakh Scouts falls under the Ministry of Defence, not the MHA. The government’s strategy for tackling LWE is not purely military; it is an integrated approach combining security and development. A key component is the transformation of 117 regions, including 35 districts severely affected by LWE, through the Aspirational Districts Program. This initiative focuses on 49 key performance indicators to improve social indicators and economic efficiency in these under-developed pockets Indian Economy, Nitin Singhania, p.148.

Feature	Central Armed Police Forces (CAPF)	Indian Army Regiments (e.g., Ladakh Scouts)
Administrative Control	Ministry of Home Affairs (MHA)	Ministry of Defence (MoD)
Primary Mandate	Internal Security, Border Guarding, Anti-Insurgency	External Defence, Conventional Warfare
Examples	CRPF, BSF, CISF, ITBP	Ladakh Scouts, Gorkha Rifles, Rajputana Rifles

Sources: Indian Polity, M. Laxmikanth, Pressure Groups, p.603; Indian Economy, Nitin Singhania, Economic Planning in India, p.148; A Brief History of Modern India, Rajiv Ahir, After Nehru..., p.716

5. Structure of the Central Armed Police Forces (CAPF) (intermediate)

To understand the administrative machinery of India's security, we must distinguish between the Central Armed Police Forces (CAPF) and the regular Armed Forces. The CAPFs are a group of seven security forces that function under the administrative control of the Ministry of Home Affairs (MHA) Indian Economy, Nitin Singhania, Sustainable Development and Climate Change, p.610. Unlike the Indian Army, Navy, or Air Force, which fall under the Ministry of Defence, the CAPFs are primarily tasked with internal security and border guarding during peacetime. Since 2011, the government has officially used the term 'Central Armed Police Forces' to avoid confusion with 'Paramilitary Forces,' which now technically refers only to the Assam Rifles and the Special Frontier Force.

The CAPF umbrella includes several specialized wings, each with a distinct mandate. The Border Security Force (BSF) acts as the 'First Line of Defence' on the borders with Pakistan and Bangladesh. The Central Reserve Police Force (CRPF) is the largest of these units; its primary role is to assist States and Union Territories in maintaining law and order and conducting counter-insurgency operations. Meanwhile, the Central Industrial Security Force (CISF) provides a security cover to over 300 industrial units, including airports, seaports, and nuclear power plants. Other forces in this category include the ITBP, SSB, and the NSG (National Security Guard).

A common point of confusion arises with specialized regional units. While many border-guarding forces are under the MHA, certain elite units like the Ladakh Scouts are actually infantry regiments of the regular Indian Army. These units are specifically trained for mountain warfare in high-altitude terrain and report to the Ministry of Defence rather than the MHA. Understanding this ministerial division is crucial for mastering the administrative structure of India’s security apparatus.

Feature	Central Armed Police Forces (CAPF)	Indian Army Regiments (e.g., Ladakh Scouts)
Ministry	Ministry of Home Affairs (MHA)	Ministry of Defence (MoD)
Primary Role	Internal security, border guarding (peacetime), industrial protection.	External defense and high-intensity warfare.
Key Examples	BSF, CRPF, CISF, ITBP, SSB, NSG.	Infantry Regiments, Armoured Corps, Ladakh Scouts.

Sources: Indian Economy, Nitin Singhania, Sustainable Development and Climate Change, p.610

6. The Indian Army's Specialized Infantry Regiments (exam-level)

In the architecture of India's national security, it is vital to distinguish between the Regular Army and the Central Armed Police Forces (CAPF). While both wear uniforms and protect the nation, they operate under different administrative umbrellas and fulfill distinct roles. The Indian Army, falling under the Ministry of Defence (MoD), is organized into various arms, with the Infantry being the "Queen of the Battle." The concept of organizing soldiers into specialized regiments is not new; even Chhatrapati Shivaji Maharaj structured his standing army into divisions of infantry and cavalry, moving away from decentralized feudal levies to a professional, salaried force History class XI (Tamilnadu state board), The Marathas, p.230.

Modern specialized infantry regiments, such as the Ladakh Scouts, are elite units of the regular Indian Army. Unlike the Border Security Force (BSF) or the Central Reserve Police Force (CRPF)—which are CAPFs under the Ministry of Home Affairs (MHA)—the Ladakh Scouts are dedicated to high-altitude mountain warfare. The strategic importance of such specialized units became painfully clear during the 1962 conflict with China in regions like Ladakh and NEFA Rajiv Ahir, A Brief History of Modern India, Developments under Nehru’s Leadership (1947-64), p.651. These units are often composed of "Sons of the Soil," local residents who are naturally acclimatized to the harsh terrain, providing a unique tactical advantage over conventional units.

Feature	Indian Army Specialized Regiments (e.g., Ladakh Scouts)	Central Armed Police Forces (e.g., BSF, CRPF)
Administrative Control	Ministry of Defence (MoD)	Ministry of Home Affairs (MHA)
Primary Role	External aggression & high-intensity warfare	Border guarding (peace time) & Internal security
Historical Context	Evolved from colonial "Native Infantry" units Brief History of Modern India, p.163	Formed as paramilitary or police-support forces

Historically, the term "regiment" has been a cornerstone of military identity. During the British era, various "Native Infantry" (N.I.) units were the primary administrative blocks, though they were often the flashpoints for mutinies when soldiers' grievances were ignored, such as the 19th N.I. at Berhampore or the 34th N.I. involving Mangal Pande Rajiv Ahir, A Brief History of Modern India, The Revolt of 1857, p.172. Today, the Indian Army maintains this regimental system to foster deep loyalty and specialized expertise, ensuring that units like the Ladakh Scouts remain the specialized "eyes and ears" of the regular army in the Himalayas.

Sources: History class XI (Tamilnadu state board 2024 ed.), The Marathas, p.230; Rajiv Ahir, A Brief History of Modern India (2019 ed.), Developments under Nehru’s Leadership (1947-64), p.651; Rajiv Ahir, A Brief History of Modern India (2019 ed.), People’s Resistance Against British Before 1857, p.163; Rajiv Ahir, A Brief History of Modern India (2019 ed.), The Revolt of 1857, p.172

7. Solving the Original PYQ (exam-level)

This question brings together your understanding of the Internal Security architecture of India, specifically the distinction between the Ministry of Home Affairs (MHA) and the Ministry of Defence (MoD). As you have learned, the forces responsible for internal security and border guarding during peacetime are categorized as Central Armed Police Forces (CAPF), which were historically referred to as Central Paramilitary Forces. Recognizing the administrative control of each force is the fundamental building block required here, as noted in Military Studies, NIOS.

To arrive at the correct answer, you must evaluate each force's primary mandate and reporting structure. The Central Industrial Security Force (CISF), Central Reserve Police Force (CRPF), and Border Security Force (BSF) are all classic examples of CAPFs that report directly to the MHA. However, the Ladakh Scouts stands out; it is an infantry regiment of the regular Indian Army. Because it is a specialized unit of the Army trained for high-altitude mountain warfare, it falls under the jurisdiction of the Ministry of Defence, making it the correct choice for a force that is not under the MHA.

UPSC often uses regional names or specialized units as traps to confuse students. In this case, because the Ladakh Scouts has a name similar to regional paramilitary units (like the Assam Rifles) or historical scout units, a candidate might mistakenly categorize it as a paramilitary force. The key is to remember that while units like the BSF and CRPF handle "policing" and "security" functions, the Ladakh Scouts is fully integrated into the Indian Army's infantry command structure. This highlights why a clear mental map of Force Categorization is essential for successfully navigating these types of elimination-based questions.