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Subject: Defence

  • Drone revolution and modern warfare

    Why in the News?

    The Ukraine War, the Israel-Hezbollah conflict, and broader West Asian confrontations demonstrate that mass-produced unmanned aerial systems (UAS) have become central to modern warfare. For the first time, relatively inexpensive, commercially derived drones have challenged the dominance of traditional military platforms such as tanks, artillery, combat aircraft, and precision-guided missile systems.

    Why has the traditional model of military superiority been challenged?

    1. Conventional Military Paradigm: Battlefield superiority historically depended on combat aircraft, tanks, artillery, warships, air-defence systems, precision-guided missiles, and advanced intelligence networks.
    2. Resource Advantage: Large military budgets enabled technologically advanced states to dominate battlefields.
    3. Asymmetric Warfare: Smaller states and non-state actors relied on guerrilla tactics, ambushes, and unconventional warfare to offset conventional disadvantages.
    4. Paradigm Shift: Commercially derived drones have disrupted this model by providing low-cost precision strike capabilities at scale.
    5. Persistent Battlespace: Modern battlefields no longer provide safe rear areas as drones can detect, track, and engage targets across the operational depth.

    How has the Ukraine War become the laboratory of industrial-scale drone warfare?

    1. Rapid Adaptation: Ukraine converted commercially available drones originally designed for photography, mapping, and surveillance into military platforms.
    2. Transformation of Role: Drones evolved from intelligence-gathering tools into active strike systems.
    3. Full Integration: By 2024, drones became integrated across almost every layer of Ukrainian combat operations.
    4. Operational Functions: Drones support battlefield surveillance, frontline targeting, artillery correction, logistics interdiction, and deep-strike missions.
    5. Replication Effect: Ukraine’s drone warfare model has subsequently influenced conflicts across West Asia.
    6. Historic First: Ukraine represents the world’s first industrial-scale, drone-intensive conflict.

    How did FPV drones revolutionise battlefield operations?

    First-Person View (FPV) drones allow you to fly while wearing specialized video goggles that stream a live, real-time feed directly from the drone’s onboard camera. Unlike standard camera drones that fly via GPS stabilization, FPV flying offers total acrobatic freedom and an immersive, cockpit-like experience.

    1. FPV (First Person View) Technology: Uses onboard cameras transmitting live video feeds to operators through virtual-reality-style goggles.
    2. Operational Advantage: Ensures precision, manoeuvrability, responsiveness, and low operational costs.
    3. Combat Variants: Includes strike drones, bombers, interceptors, and long-range attack systems.
    4. Cost Asymmetry: Systems costing only a few hundred dollars can destroy armoured vehicles and equipment worth millions.
    5. Expanded Combat Envelope: Thermal-imaging and night-vision variants enable round-the-clock operations.
    • Examples
      • Vampire Hexacopter (“Baba Yaga”): Heavy-lift drone used for combat missions.
      • FPV Kamikaze Drones: Quadcopters carrying explosive payloads such as: Rocket-propelled grenade (RPG) warheads. and Purpose-built munitions.

        How has Ukraine developed a layered drone ecosystem?

        1. Loitering Munitions
          1. RAM II: Short-range precision loitering munition used alongside reconnaissance drones.
          2. UJ-31 Zozulya: Aerially deployed “parasite drone” carried by the UJ-22 Airborne UAV to extend operational reach.
        2. Reconnaissance Systems
          1. Shark Drone: Provides reconnaissance support.
          2. PD-2: Supports surveillance and targeting missions.
        3. Bomber Drones
          1. DJI Mavic 3 Adaptations: Converted from civilian applications to military bomber roles.
          2. DJI Matrice 300 RTK Adaptations: Modified to carry Grenades, Anti-tank mines and Other munitions.
          3. Operational Benefit: Survive missions and conduct multiple sorties unlike kamikaze drones.
        4. Deep Strike Systems
          1. Pegasus FPV Strike Drone: Supports tactical strike operations.
          2. One-Way Attack Drones: Conduct deep strikes against:
            1. Logistics hubs.
            2. Airbases.
            3. Critical infrastructure.
        5. Parasite Drone Concept: UJ-31 Zozulya is carried by the UJ-22 Airborne UAV and released mid-air, extending operational range and penetration capability.

        Why are fibre-optic drones considered a major battlefield innovation?

        A fiber-optic drone is an unmanned aerial vehicle (UAV) that tethers to a ground controller via a thin, hair-like optical fiber cable. Deployed primarily as first-person view (FPV) loitering munitions or reconnaissance craft, they transmit control signals and high-bandwidth video through light, rendering them completely immune to electronic warfare (EW) jamming.

        1. Electronic Warfare Resistance: Conventional drones rely on radio-frequency links vulnerable to jamming.
        2. Fibre-Optic Guidance: Uses physical fibre-optic cables spooled during flight.
        3. Reduced Vulnerability: Ensures mission continuity despite electronic warfare interference.
        4. Operational Advantage: Enables operations in heavily contested electromagnetic environments.
        5. Strategic Significance: Restores drone effectiveness where conventional systems would fail.

        How does Hezbollah employ drones in its military strategy?

        Iranian Supply Chain: Relies heavily on Iranian-origin drone platforms.

        Key Platforms

        1. Ababil Series: Supports ISR and strike missions.
        2. Mohajer Series: Provides medium-range reconnaissance capabilities.
        3. Shahed Series: Performs surveillance and attack functions.

        Specific Systems

        1. Mohajer-4: Provides ISR coverage.
        2. Shahed-129: Supports medium- to long-range ISR missions.
        3. Shahed-136: Functions as a dedicated one-way strike loitering munition.

        Technological Adaptation

        1. Fibre-Optic FPV Drones: Adopted to overcome Israeli electronic warfare measures.

        How has Israel responded to the drone challenge?

        1. Layered Counter-Drone Architecture
          1. Electronic Warfare Systems: Supports drone detection and disruption.
          2. Specialised Radar Arrays: Improves low-altitude drone tracking.
        2. Emerging Technologies/AI-Enabled Iron Drone Raider:
          1. Neutralises drones through kinetic interception.
          2. Uses net capture mechanisms.
          3. Employs direct collision tactics.
          4. Reduces reliance on expensive missile interceptors.
        3. Integrated UAV Force Structure
          1. Heron Systems: Provide long-endurance ISR coverage.
          2. Armed Drones: Support precision strike missions.
          3. Loitering Munitions: Enable rapid reconnaissance-strike integration.

        How does Iran represent a distinct model of drone warfare?

        1. Strategic Integration: Uses drones as instruments of national deterrence and power projection, not merely battlefield weapons.
        2. Proxy Warfare Network: Supplies drone capabilities to allies and proxy groups across Iraq, Syria, Lebanon, and Yemen.
        3. IRGC-Led Doctrine: Integrates drone development and deployment into the Islamic Revolutionary Guard Corps’ military strategy.
        4. Indigenous Production: Manufactures Shahed-series drones domestically, ensuring scalability and strategic autonomy.
        5. Low-Cost Regional Influence: Projects military power and threatens adversary assets across West Asia without maintaining expensive conventional air forces.

        Why is the drone revolution fundamentally an economic revolution?

        1. Cost Efficiency: Cheap unmanned systems replace expensive military platforms.
        2. Production Scale: Industrial manufacturing capacity increasingly determines battlefield success.
        3. Attrition Advantage: Large-scale drone production offsets losses.
        4. Battlefield Economics: Few hundred-dollar drones can destroy million-dollar platforms.
        5. Industrial Endurance: Success depends on continuous production and adaptation.
        6. Technological Adaptability: Drone systems are rapidly reconfigured for evolving battlefield requirements.

        Conclusion

        Modern warfare is transitioning from a platform-centric model to a drone-centric ecosystem characterised by low-cost precision, continuous reconnaissance, and rapid innovation. As drones become central to deterrence, power projection, and battlefield operations, military advantage will increasingly depend on the ability to build, deploy, adapt, and neutralise unmanned systems at scale.

        Value Addition

        Revolution in Military Affairs (RMA)

        1. Integration of emerging technologies into warfare.
        2. Alters doctrine, force structure, and operational concepts.
        3. Comparable to:
          1. Gunpowder Revolution.
          2. Mechanised Warfare.
          3. Nuclear Revolution.
          4. Information Warfare.

        Emerging Technologies in Warfare

        Artificial Intelligence

        1. Autonomous targeting.
        2. Swarm coordination.
        3. Decision support systems.

        Electronic Warfare

        1. Jamming.
        2. Spoofing.
        3. Signal disruption.

        Autonomous Systems

        1. Loitering munitions.
        2. Unmanned combat aerial vehicles.

        Network-Centric Warfare

        1. Real-time ISR integration.
        2. Sensor-to-shooter connectivity.

        PYQ Relevance

        [UPSC 2023] The use of unmanned aerial vehicles (UAVs) by our adversaries across the borders to ferry arms/ammunitions, drugs, etc., is a serious threat to internal security. Comment on the measures being taken to tackle this threat.

        Linkage: The PYQ examines the security implications of the growing use of drone technology. The article discusses how drones have become central to modern warfare, highlighting the need for advanced counter-drone capabilities to address emerging military and internal security threats.

      1. DRDO Successfully Flight-Tests Long Range Land Attack Cruise Missile (LRLACM)

        Why in the news?

        The Defence Research and Development Organisation (DRDO) successfully conducted the flight test of the Long Range Land Attack Cruise Missile (LRLACM) from Dr APJ Abdul Kalam Island on 15 June 2026

        About LRLACM

        • LRLACM stands for Long Range Land Attack Cruise Missile.
        • It is an indigenously developed cruise missile.
        • All major subsystems have been developed by DRDO laboratories and Indian industry partners.
        • The Aeronautical Development Establishment (ADE), Bengaluru is the nodal laboratory.

        What is a Cruise Missile?

        • A guided missile that flies within the atmosphere for most of its trajectory.
        • Uses aerodynamic lift and propulsion throughout flight.
        • Designed for high precision strikes against land targets.
        • Generally flies at low altitudes to avoid radar detection.

        Cruise Missile vs Ballistic Missile

        • Cruise missiles: Powered throughout flight and follow a relatively flat trajectory.
        • Ballistic missiles: Powered only during the initial phase and then follow a ballistic path under gravity.

        [2023] Consider the following statements
        1. Ballistic missiles are jet-propelled at subsonic speeds throughout their fights, while cruise missiles are rocket-powered only in the initial phase of fight.
        2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled intercontinental ballistic missile.
        Which of the statements given above is/are correct?

        [A] 1 only

        [B] 2 only

        [C] Both 1 and 2

        [D] Neither 1 nor 2

      2. Project Kusha: India’s Indigenous Long-Range Air Defence System

        Why in the news?

        Defence Minister Rajnath Singh described Project Kusha as a “game changer” for India’s security architecture and stated that its significance had been demonstrated during Operation Sindoor.

        What is Project Kusha?

        • An indigenous long-range air defence missile system being developed by the Defence Research and Development Organisation (DRDO).
        • Intended to provide a multi-layered air defence shield against diverse aerial threats.
        • Often viewed as India’s indigenous counterpart to advanced systems like the Russian S-400 Triumf.

        Objectives

        • Protect military assets and strategic installations.
        • Defend critical infrastructure and civilian areas.
        • Enhance India’s indigenous air defence capabilities.
        • Strengthen strategic autonomy under the Aatmanirbhar Bharat initiative.

        Threats It Is Expected to Counter

        • Fighter aircraft, Cruise missiles, Ballistic missiles, Drones and UAVs, Precision-guided munitions, and Stand-off weapons

        Mission Sudarshan Chakra

        • Announced by Prime Minister Narendra Modi during the 2025 Independence Day address.
        • Envisages a nationwide multi-layered missile defence shield.
        • Aims to protect: Military establishments, Critical infrastructure, and Civilian population centres.
        • Project Kusha is expected to be an important component of this vision.

        [2018] What is “Terminal High Altitude Area Defense (THAAD)”, sometimes seen in the news?

        [A] An Israeli radar system

        [B] India’s indigenous anti-missile programme

        [C] An American anti-missile system

        [D] A defence collaboration between Japan and South Korea.

        1. Successful Flight Test of RudraM-II Missile

          Why in the news?

          Defence Research and Development Organisation and the Indian Air Force successfully flight tested the indigenous RudraM-II air-to-surface missile on June 2, 2026.

          Key Highlights

          • Missile was launched from: An airborne platform under extreme release conditions.
          • Successfully:
            • Followed intended trajectory
            • Hit the predefined target accurately.
          • Trials validated:
            • Critical subsystems
            • Flight parameters
            • Precision strike capability.

          About RudraM-II

          • RudraM-II is an indigenous air-to-surface missile.
          • Designed for Precision strike missions.
          • Capable of destroying enemy ground-based targets.

          [2023] Consider the following statements
          1. Ballistic missiles are jet-propelled at subsonic speeds throughout their fights, while cruise missiles are rocket-powered only in the initial phase of fight.
          2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled intercontinental ballistic missile.
          Which of the statements given above is/are correct?

          [A] 1 only

          [B] 2 only

          [C] Both 1 and 2

          [D] Neither 1 nor 2

        2. With reference to Indian defence, which one of the following statements is NOT correct

          With reference to Indian defence, which one of the following statements is NOT correct?

        3. Which one of the following is another name of RDX

          Which one of the following is another name of RDX?

        4. Which one of the following countries recently upgraded its defense agency to a full defense ministry

          Which one of the following countries recently upgraded its defense agency to a full defense ministry?

        5. From which one of the following did India buy the Barak anti-missile defence systems

          From which one of the following did India buy the Barak anti-missile defence systems?

        6. What is Agent Orange

          What is Agent Orange?

        7. ‘Hand-in-Hand 2007’, a joint anti-terrorism military training was held by the officers of the Indian Army and officers of the Army of which one of the following countries

          ‘Hand-in-Hand 2007’, a joint anti-terrorism military training was held by the officers of the Indian Army and officers of the Army of which one of the following countries?