Digital twins are transforming defence. By creating real-time virtual replicas of vehicles, bases, and weapons systems, militaries can monitor, simulate, and optimise performance like never before. From predicting breakdowns to rehearsing missions and fusing sensor data, this emerging technology is reshaping readiness and decision-making, offering forces a decisive edge in modern warfare.
NEWS ANALYTICS TECH DESK
a 5 mins read.
The idea of building a “twin” in the digital world is no longer confined to science fiction. Digital twins are real, powerful tools already changing the way industries operate. In simple terms, a digital twin is a living, virtual copy of a physical system—an aircraft, a ship, a tank, or even a military base—constantly updated with data from sensors and operations. While the technology first took shape in manufacturing and aviation, its potential for defence is immense. For militaries, creating digital twins of vehicles, bases, and weapon systems means being able to simulate, optimise, and manage assets in real time. This article explores the scope of digital twins in defence, their use cases such as predictive maintenance, mission rehearsal, and sensor fusion, and their promise for the future battlefield.
WHAT IS A DIGITAL TWIN?
A digital twin is not just a computer model. Unlike a static simulation that runs in isolation, a digital twin is a dynamic digital version of a real asset that continuously mirrors its physical counterpart. Sensors placed on machines or systems feed live data into the twin, which updates itself accordingly. This twin can then be used to understand what is happening now, predict what may happen next, and test different scenarios without risking the real asset.
For defence platforms, this means that a commander could see the exact status of an aircraft or tank fleet at any given time, or simulate how a base would function under attack, or even test the performance of a missile system against enemy countermeasures—all in the safety of a virtual environment.
DIGITAL TWINS FOR VEHICLES
Defence vehicles are among the most complex machines ever built. Tanks, fighter jets, submarines, and warships are equipped with thousands of components and countless sensors. Each of these generates critical data about performance and wear. When combined into a digital twin, this data creates a highly accurate virtual replica.
For example, a digital twin of a fighter aircraft can record flight data, monitor engine health, and simulate performance in different weather or combat conditions. Engineers and pilots can use it to anticipate failures, test modifications, or rehearse missions. Similarly, a tank’s digital twin could track stress on its tracks or vibration in its engine to forecast when parts will need replacement. Warships, with their complex propulsion systems and layered weaponry, can also benefit from digital twins that monitor hull integrity, energy usage, and even the impact of simulated damage.
The advantage is simple: instead of reacting to breakdowns or relying on fixed schedules for servicing, militaries can keep vehicles combat-ready through real-time monitoring and predictive insights.
Predictive maintenance via digital twins prevents costly breakdowns by using real-time data, avoiding wasteful fixed schedules and dangerous post-failure repairs for critical defence platforms.
DIGITAL TWINS FOR MILITARY BASES
Military bases are no longer just static installations. Modern bases are like living ecosystems, made up of power grids, water supplies, communication networks, cyber systems, and logistics hubs. A digital twin of a base can create a complete virtual version of this environment. Commanders can then monitor energy use, track supplies, and even test how the base would respond to natural disasters or hostile attacks.
Imagine a base under a simulated drone swarm attack: the digital twin could show how radar and defence systems react, highlight weak points, and suggest changes before an actual attack occurs. In peacetime, the same twin could help reduce energy costs, optimise logistics, and improve overall efficiency.
DIGITAL TWINS FOR WEAPONS SYSTEMS
Weapons systems are the sharp edge of military power, and digital twins can make them sharper. Artillery, missile batteries, radars, and electronic warfare systems can all be replicated in the digital world. A missile system, for example, can be virtually tested against different weather patterns or enemy jamming techniques. Artillery systems can use their digital twin to predict barrel wear or improve targeting accuracy.
By linking weapons systems with vehicle and base twins, militaries can create integrated simulations where every element works together. This opens the way to realistic mission rehearsals and faster decision-making during operations.
STAYING AHEAD OF FAILURE
One of the strongest use cases for digital twins is predictive maintenance. Defence platforms are expensive and often unavailable for long stretches due to breakdowns or scheduled overhauls. Traditionally, equipment is either serviced at fixed intervals, which can be wasteful, or repaired only after it fails, which can be dangerous.
A digital twin changes this by combining real-time data with AI analytics to forecast exactly when a part is likely to fail. For instance, an aircraft engine’s twin may show that unusual vibrations indicate a bearing problem that will worsen within 50 flight hours. Maintenance crews can then act before the engine fails in mid-air.
The result is more reliable fleets, lower costs, and higher operational readiness. Predictive maintenance is already being used in the civil aviation sector, and defence forces are beginning to adopt it for fighters, ships, and armoured vehicles.
Legacy defence platforms struggle with digital integration; adding sensors to old tanks or ships is costly, complex, and often impractical for modernisation.
MISSION REHEARSAL
Perhaps the most exciting role of digital twins is in mission rehearsal. Military simulations are not new, but digital twins take them to the next level. Instead of training on generic models, soldiers and commanders can now rehearse missions on exact replicas of their own equipment and environments.
A pilot can fly a strike mission in the digital twin of their actual aircraft, with real-time data on its condition and weapon load. A naval commander can simulate sailing through contested waters, testing how their ship’s sensors would perform against enemy submarines. A base commander can rehearse defence against a cyber or drone attack, watching the twin reveal vulnerabilities before they become real.
The true value lies in feedback. Every rehearsal updates the twin, which becomes smarter and more accurate over time, providing better preparation for future operations.
SITUATIONAL AWARENESS
Modern warfare is defined by information overload. Satellites, drones, radars, electronic sensors, and even social media generate a flood of data. Commanders often struggle to make sense of it all quickly enough to act.
Digital twins can act as fusion centres, combining data from multiple sources into a single, coherent picture of the battlefield. Instead of separate feeds from radar and drones, commanders see a real-time digital replica of the battlespace with threats, opportunities, and predictions clearly marked. Artificial intelligence helps filter noise, highlight priorities, and even simulate enemy moves.
This not only reduces the time between detecting a threat and responding to it but also allows for better coordination across air, land, sea, and cyber domains.
CHALLENGES TO DEFENCE ADOPTION
Despite their promise, digital twins in defence face challenges. The first is security: feeding sensitive operational data into networks and clouds always raises the risk of cyber espionage. Nations will need strict controls to ensure sovereignty and protect classified information.
The second is integration. Defence forces often rely on legacy platforms that were not designed for digital ecosystems. Adding sensors and connectivity to old tanks or ships is costly and sometimes impractical.
Third, high-fidelity twins require powerful computing resources and significant investment. Creating a twin of a fighter jet is already complex; simulating an entire battlefield is even more demanding.
Finally, trust in artificial intelligence remains an issue. Commanders may hesitate to act on recommendations from a system they cannot fully explain. Building confidence in AI-driven twins will take time, testing, and clear accountability.
Digital twins revolutionise defence by creating real-time virtual replicas of platforms, enabling predictive maintenance, mission rehearsal, and sensor fusion—shifting how militaries design, operate, and sustain assets.
TECHNOLOGICAL TREND
Despite these hurdles, the momentum behind digital twins in defence is strong. The United States Air Force already uses them to manage F-35 and F-15 aircraft fleets. The Royal Navy has begun to twin its ships for performance monitoring. India, too, is exploring digital twin technologies for submarines and smart shipyards.
The future may see digital twins extending beyond platforms to entire operations. Satellites, drones, cyber systems, and human intelligence could all feed into a theatre-wide twin of the battlespace. This would allow commanders to not only see the present but also rehearse future moves and prepare for unforeseen scenarios.
Emerging applications include space militarisation, where twins of satellites track orbital paths and resilience to cyberattacks; AI-augmented command, where wargaming is done within the twin to support strategic decisions; and immersive soldier training using augmented and virtual reality built around the twin.
Digital twins are more than a technological trend. They represent a shift in how militaries design, operate, and sustain their platforms. By creating real-time virtual replicas of vehicles, bases, and weapons systems, defence forces gain a powerful tool for predictive maintenance, mission rehearsal, and sensor fusion.
They make forces proactive rather than reactive, adaptive rather than rigid, and integrated rather than siloed. While challenges of cost, security, and integration remain, the advantages are too significant to ignore.
In the coming years, digital twins may well become the backbone of Defence 5.0, a future where the physical and digital worlds work hand in hand to ensure readiness, resilience, and superiority in modern warfare.
Key Takeaways
- Digital twins create real-time virtual replicas of vehicles, bases, and weapon systems.
- They enhance predictive maintenance, mission rehearsal, and operational readiness across defence platforms.
- Bases and weapons systems gain efficiency, resilience, and improved defence through digital simulations.
- Challenges include cyber risks, high costs, integration with legacy systems, and AI trust issues.
- Despite hurdles, digital twins are set to transform Defence 5.0 into an adaptive, integrated force.
