A leading military simulation tool gets an AI upgrade

Over the Memorial Day weekend, The Telegraph posted an interesting article about how the U.S. military was working to protect its new aid pier in Gaza—not from conventional forces, but from drones. According to the article, the Army is using a pair of experimental new vehicles designed to track incoming drones, then disrupt their signal or shoot them down.

That's happening as the various military branches consider whether they should implement individual anti-drone corps or work together against the threat. One thing that is clear is that drones are changing warfare, with over 100,000 combat drones being used each month by the sides fighting in Ukraine.

Protecting the pier in Gaza may be one way to field-test new anti-drone weapons. But there is another place where American troops and their NATO allies are already facing off against swarms of tactical drones and other unmanned vehicles, and plotting ways to combat and ultimately defeat them: Virtual Battlespace 4. One of the most detailed military simulators in the world, VBS4 enables soldiers equipped with virtual reality headsets and other sensors to use realistic weapons just like they would in real life. The platform's artificial intelligence recently got an upgrade to provide more realistic adversaries, where each individual enemy combatant is able to think for themselves, as opposed to just having an overall grand strategy. There is even a new Ukrainian Battle Simulation that lets allied countries fight realistic battles inside Ukraine against Russian troops — just in case such training would ever be needed.

Created by Bohemia Interactive Simulations, VBS4 is used by more than 60 nations, including the United States, for intense virtual training. Over the years, officials from Bohemia have been happy to talk with Nextgov/FCW about advancements in simulation technology and evolving military strategy. Those advancements used to come every year or so, but with the evolving battlefield in Ukraine they are now being deployed at a much more rapid pace. We spoke with Pete Morrison, co-founder and chief product officer at BISim.

Nextgov/FCW: When we talked last year, the world’s militaries were kind of shocked at how drones were being used in both new and highly effective ways in Ukraine, and there was a demand for simulations to add that element to their virtual battlefields. How have you had to adapt to the use of drones?

Morrison: Drones are a step-change in warfare, providing unprecedented tactical situational awareness and a new offensive capability like loitering munitions or kamikaze drones. To reflect the changing nature of warfare, we’ve been continuously adding new drone capabilities in VBS based on real-world developments observed in publicly available information. 

This allows NATO forces to develop counter-drone tactics and prototype new defense technologies within the simulation. Additionally, we've incorporated advanced AI to simulate drone behavior, reducing the need for human operators in training scenarios focused on defeating drone attacks.

Nextgov/FCW: It sounds like drones make it more challenging for military simulations to accurately reflect real life. What other challenges stemming from the war in Ukraine are changing or challenging military simulations?

Morrison: The Ukraine conflict highlighted limitations in traditional simulations and wargames regarding logistics and the impact of morale on operations. Simulating force-on-force engagements like tank platoons fighting is relatively easier than accurately replicating larger-scale Brigade-level operations. 

Early in the Ukrainian conflict, Russian supply chain failures and stalled armored advances due to single vehicle losses demonstrate these limitations. Simulations don't necessarily require more weapons platforms, but rather improved capabilities for simulating real soldiers operating within a conventional war. 

At BISim, our approach utilizes AI to simulate every soldier individually, replacing traditional roll the dice aggregation methods. We're currently scaling this entity-level simulation using cloud technology.

Nextgov/FCW: That is really interesting how each individual soldier is controlled by AI within the simulated environment. Has there been a push to improve the intelligence of the AI even further?

Morrison: The VBS4 is primarily used for tactical training and mission rehearsal. Scenarios are designed with specific learning objectives in mind, like a company clearing a city block or a battalion practicing a convoy mission. And VBS scenarios involve human participants ranging from a few people to hundreds, so the AI needs to support those training goals. This means it must be controllable by the administrator and repeatable to facilitate training effectiveness.

While there might be future demand for more intelligent AI in VBS, we haven't witnessed that need yet. It's important to remember that military simulations encompass various types. For instance, intelligent AI could be highly valuable for high-level wargaming, potentially identifying gaps in a commander's plan or even advising forces on the most suitable strategy based on real-time situations.

Nextgov/FCW: What about the new generative AIs? Could they play a role in future battlefield simulations?

Morrison: Well, our current AI utilizes behavior trees for controllability and repeatability, as previously mentioned. While advancements in generative AI are exciting, their application in tactical military AI remains unclear. GenAI excels at processing vast amounts of data and offering intelligent summaries, but this differs significantly from analyzing a tactical situation and developing a solution or generating autonomous AI behavior. 

We see machine learning AI having a more immediate impact on autonomous weapon platforms, which pose a significant future threat. Drones capable of making autonomous kill decisions without human input will be challenging to counter, and NATO needs to prioritize addressing this. Simulations like VBS can provide a testing ground for the AI driving those drones to develop tactics to counter them.

Nextgov/FCW: We have talked a lot about how the war in Ukraine is affecting military training and simulations, but it’s also fostering a need for Ukrainian-based scenarios to train in. Tell us about the newly deployed Ukrainian battlespace.

Morrison: In addition to VBS's military simulation capabilities, we also specialize in recreating real-world environments for training and mission rehearsal and planning. A recent example is our high-fidelity Ukrainian terrain, developed in collaboration with LuxCarta. 

This Ukrainian terrain can serve as a foundation for creating new training scenarios or even replicating real-world events, such as rehearsing using past Russian assaults. This benefits both Ukrainian and NATO forces. Our partnership with LuxCarta allows us to rapidly generate new simulation terrains, reflecting real-world changes like trench digging or infrastructure destruction.

This is a game-changer for modern militaries. They can now train virtually on terrain that precisely replicates their upcoming deployment or operational zone.

Nextgov/FCW: It seems like advancements in both warfare and simulation technology are being developed extremely quickly these days. Can you give us a hint at what we might see next in virtualized training environments?

Morrison: We're enthusiastic about delivering entity-level simulation capabilities at a massive scale very soon. Traditionally, simulating every entity within large formations has been a limitation of military simulations. This is why constructive simulations rely on aggregation and so-called rolling the dice for outcomes. But our high-fidelity entity-level AI is now being combined with cloud technology to simulate massive numbers of individual units. This will be a game-changer, hopefully providing more realistic outcomes in AI-vs-AI engagements at scale.

John Breeden II is an award-winning journalist and reviewer with over 20 years of experience covering technology. He is the CEO of the Tech Writers Bureau, a group that creates technological thought leadership content for organizations of all sizes. Twitter: @LabGuys