How the US Military Uses VR for Soldier and Pilot Training (2026)

The United States military has been investing in virtual reality training systems for more than three decades - long before consumer VR headsets brought the technology into mainstream awareness. The scale of current US military VR deployment spans all four branches, covers training requirements from individual marksmanship through joint mission rehearsal, and involves program budgets that run into the billions of dollars. What began as experimental simulator research has become a fundamental component of how the US maintains force readiness between live exercises and combat deployments.

The application of VR in US military training is not uniform across branches or training contexts. The Army has invested most heavily in dismounted soldier simulation through the Synthetic Training Environment program. The Air Force operates the largest fleet of fixed-base full-flight simulators and is integrating VR into undergraduate pilot training. The Navy applies VR to surface and submarine warfare training as well as naval aviation. The Marine Corps uses VR for combined arms mission rehearsal and urban operations training. Each branch has developed programs shaped by its specific training requirements, force structure, and budget allocation.

This guide covers the major VR training programs across US military branches - what they do, what hardware and software platforms they use, what training outcomes they are designed to deliver, and how they compare in cost-effectiveness to traditional field training. It also examines DARPA research programs developing next-generation military VR capabilities and the current state of DoD budget allocation for simulation and training systems.

The Synthetic Training Environment

The Synthetic Training Environment (STE) is the US Army's flagship program for modernizing virtual training. Its objective is to replace more than 70 legacy simulation systems - many purpose-built for specific platforms that cannot interconnect - with a single unified networked architecture linking individual soldier trainers, squad and platoon-level VR environments, and constructive wargaming tools through a common software framework. The STE Cross-Functional Team at Fort Leavenworth manages the program as one of the Army's 31 modernization priorities.

The centerpiece of STE's terrain environment is One World Terrain (OWT), a globally consistent terrain database built from classified and unclassified satellite, aerial, and sensor data. OWT enables units to train in virtual replicas of their actual operational areas rather than generic synthetic terrain - a meaningful upgrade over legacy systems that required expensive custom terrain builds for each new operational environment. When a unit receives orders to deploy to a specific region, they can immediately begin rehearsing in a virtual representation of the actual terrain they will operate on, with the same vegetation density, road networks, and urban feature layouts.

Bohemia Interactive Simulations (BISim) is a key contractor for STE, providing VBS Blue IG visual system modules and integration with the STE network through OneSAF semi-automated forces. The program has moved from early Squad Immersive Virtual Trainer (SIVT) prototypes toward a more distributed architecture that allows VR training devices to be deployed forward to brigade and battalion-level units rather than requiring soldiers to travel to fixed simulation centers. The Army's fiscal year 2025 budget request included approximately $287 million for STE-related programs across research, development, and procurement accounts.

Army Ground Force VR Training

Below the STE program level, the US Army operates a range of VR training systems for specific individual and collective skills. The Engagement Skills Trainer (EST) 2000 series provides individual marksmanship training through a virtual range system that simulates ballistics, wind, and target behavior for all standard infantry weapons including the M4 carbine, M249 SAW, M240B machine gun, AT4 anti-armor launcher, and M320 grenade launcher. EST 2000 systems are fielded across continental US installations and combat training centers, providing trainees with immediate ballistic feedback that physical ranges cannot match at the same throughput.

The Crew Gunnery Skills Trainer (CGST) delivers virtual gunnery training for Abrams tank crews and Bradley fighting vehicle crews, enabling gunners and commanders to engage simulated targets with accurate weapons behavior and target effects before conducting expensive live-fire qualification on physical ranges. The system simulates thermal sights, stabilization systems, and ballistic solutions specific to each platform, reducing the risk of costly ammunition expenditure on crews who have not yet developed foundational fire-control skills. Vehicle crew training systems are fielded at multiple Army installations and at the Combined Arms Center at Fort Leavenworth.

VirTra's immersive scenario theaters provide use-of-force and rules-of-engagement training for combat troops, military police, and special operations forces. The V-300 system - a 300-degree five-screen immersive theater with branching scenario software and the Threat-Fire haptic vest that delivers a mild shock stimulus when the system scores a hit on the trainee - creates stress inoculation that screen-based trainers cannot replicate. Studies of VirTra system outcomes have documented measurable improvements in shoot/no-shoot decision speed and accuracy in units that used the system before deployment.

Air Force and Naval Aviation Simulators

The US Air Force operates one of the world's largest fleets of military flight simulators, with full-mission simulators for every major aircraft type in its inventory. A full-mission simulator replicates the cockpit, instrument systems, communications, and sensor environment of the actual aircraft with a visual system providing a 360-degree out-the-window view through either a dome display or, increasingly, a high-resolution LED visual system. For the F-35A, the Air Force's Advanced Pilot Training device at Luke Air Force Base allows student pilots to fly their first simulated sorties before ever sitting in the live aircraft.

The T-7A Red Hawk, the Air Force's advanced pilot trainer, was designed with simulation as a central component of the training pipeline from the start. CAE holds a contract to deliver T-7A full-flight simulators and associated training devices, and the program plans to allocate a higher proportion of required flight hours to simulation than previous trainer programs - reducing the live flying hours required per student pilot and cutting per-student training costs. The F-35 Distributed Mission Operations (DMO) system allows geographically separated pilots to fly linked simulated sorties together, replicating multi-ship formation flying and combat training without the cost of airborne exercises.

Naval aviation applies the same simulator infrastructure to carrier-based aircraft training. The F/A-18E/F and EA-18G simulators at NAS Oceana and other naval air stations include carrier landing simulation with deck motion modeling, giving student naval aviators significant exposure to carrier approach procedures before their first actual arrested landings. The H-60 helicopter simulator fleet, used for Navy and Army rotary-wing training, includes degraded visual environment (DVE) scenarios that would be impossible to replicate safely in actual aircraft - including brownout and whiteout landing conditions that are among the most common causes of rotary-wing accidents in operational environments.

Medical and Trauma Care Training

Tactical Combat Casualty Care (TC3) is the military's standard for battlefield trauma management, and VR has become an important modality for TC3 training at scale. Traditional TC3 training relies on manikins, cadavers, and high-fidelity human patient simulators - all of which are expensive, require trained instructors, and can only accommodate small groups at a time. VR-based medical simulation lets individual soldiers practice tourniquet application, needle chest decompression, hemorrhage control, and casualty evacuation procedures in simulated scenarios with immediate feedback on technique accuracy and procedure sequencing.

The US Army Medical Center of Excellence (MEDCoE) at Fort Sam Houston, Texas, has integrated VR into its Combat Medic training pipeline. The CAE VimedixAR system uses AR overlays on a physical patient simulator to display internal anatomy and physiological responses, allowing medic trainees to correlate physical examination findings with underlying pathophysiology in ways that static manikins cannot demonstrate. Oxford Medical Simulation (now part of Laerdal Medical) has provided VR-based medical scenario training to US military medical providers, including deployed surgical teams who use VR for team training and procedural rehearsal.

The value of VR for TC3 training extends beyond initial skill acquisition to sustainment training for non-medic soldiers. Every US Army soldier receives TC3 training at basic and unit level, but sustainment training - keeping those skills sharp between deployments - is constrained by manikin availability and instructor time. VR-based TC3 trainers let units run self-directed sustainment training sessions without dedicated instructors, significantly increasing the number of repetitions each soldier completes per training cycle at a fraction of the logistics cost of instructor-led manikin training.

DARPA Research and Emerging Programs

DARPA (Defense Advanced Research Projects Agency) funds early-stage research into military VR and XR capabilities at lower technology readiness levels than current fielded systems. The DARPA Accelerated Learning program investigated whether VR-based training protocols can compress the time required to develop expert-level military skills through optimized feedback mechanisms, interleaved practice schedules, and adaptive difficulty scaling. Several university and defense contractor performers conducted studies under this program examining skill transfer from VR to live performance across domains including marksmanship, navigation, and small unit tactics.

DARPA's Squad X program explored AR systems that give small unit infantry improved situational awareness through networked sensor feeds, AI-generated threat assessments, and shared digital maps overlaid on their field of view. The program demonstrated dismounted infantry squads equipped with AR tablets and early HMD prototypes coordinating with unmanned aerial systems to navigate complex urban environments, with squad leaders receiving real-time position data for all squad members and AI-curated sensor feeds without requiring radio voice traffic for positional updates - reducing communication signatures in environments where radio traffic creates detection risk.

The Air Force Research Laboratory (AFRL) has funded research into VR-based cognitive training for pilots under the Human Performance Wing at Wright-Patterson Air Force Base. Programs have included research into whether VR spatial navigation training transfers to improved performance in actual aircraft, and whether VR stress inoculation protocols - exposing pilots to high-workload simulated emergency scenarios - reduce the physiological stress response in live cockpit emergencies in ways that traditional ground school cannot achieve. Some findings from these programs have informed requirements for the T-7A and F-35 simulator programs.

VR vs. Field Training: What the Evidence Shows

The question of how well VR training transfers to live performance is the central research question in military simulation science. The evidence base is substantial and consistently favorable for VR simulation across most training domains, though transfer effectiveness varies with headset resolution, simulation fidelity, and the degree to which the virtual environment replicates the sensory demands of the live environment. For procedural tasks - medical procedures, weapons loading, vehicle crew functions - VR transfer rates are consistently high, and studies show that VR-trained trainees reach live proficiency standards faster than trainees without VR pre-training.

For tactical decision-making and situational awareness tasks, the evidence is more nuanced. VR environments can train the cognitive skills involved in route selection, threat prioritization, and communication coordination, but they typically cannot fully replicate the physical fatigue, environmental stress, and interpersonal friction of live tactical situations. The military's approach is to use VR for cognitive and procedural skill development, then validate those skills under physical stress in live training events. This tiered approach - virtual for volume, live for validation - produces the best training outcomes per training dollar across documented programs.

The most rigorous transfer research available in the open literature involves aviation simulation. Studies across commercial and military aviation programs consistently document that simulator-trained hours contribute to live proficiency at rates between 0.4 and 0.8 simulator hours per live flying hour equivalent, depending on the task and simulator fidelity. The US Air Force has used these transfer coefficients to reduce the number of live flying hours required in undergraduate pilot training, with measurable reductions in per-pilot training cost and no documented degradation in live performance outcomes over programs spanning decades of data collection.

DoD Budget Allocation and Program Scale

The US Department of Defense spends approximately $12 billion to $15 billion annually on modeling, simulation, and training systems across all branches, making it one of the largest simulation markets in the world. This figure includes development, procurement, and operations costs for all simulation categories including flight simulators, ground vehicle trainers, weapons trainers, and constructive wargaming systems. The Army's simulation portfolio is the largest single branch allocation, driven by the scale of the STE program and the ground force training device fleet.

The IVAS program - the US Army's AR headset program based on Microsoft HoloLens technology - represents the most significant XR investment in the defense portfolio. The Army signed a $21.88 billion contract with Microsoft in 2021 for production versions of IVAS, though deliveries were subsequently paused in 2022 after soldier field tests identified performance issues including visual discomfort and display readability in bright outdoor conditions. The program resumed at reduced scale, with the Army accepting limited deliveries while Microsoft developed hardware revisions. Congressional scrutiny of the program has been ongoing, with multiple hearings examining whether the production contract was awarded before the technology met soldier acceptance criteria.

Flight simulation procurement represents the largest single line item in the simulation budget across all branches. Full-flight simulators for combat aircraft cost between $15 million and $40 million each, and the Air Force, Navy, and Marine Corps operate hundreds of them across domestic installations. Each simulator requires a trained instructor operator, regular software updates to remain current with aircraft modifications, and a recurring maintenance contract. Despite these costs, the lifecycle cost of a simulator fleet is substantially lower than the equivalent live flying hours it displaces, and the US military has documented positive return on investment from its simulation infrastructure consistently over the past four decades.

Frequently Asked Questions

What VR training system does the US Army use?

The US Army's primary VR training program is the Synthetic Training Environment (STE), which aims to replace more than 70 legacy simulation systems with a unified networked architecture. Key components include One World Terrain (OWT) for globally consistent virtual environments, VBS4 from Bohemia Interactive Simulations for dismounted ground-force training, and the Engagement Skills Trainer 2000 for individual marksmanship. The Army also operates Crew Gunnery Skills Trainers for Abrams and Bradley crews, VirTra immersive scenario theaters for use-of-force training, and medical VR systems at Combat Medic training facilities. The STE program received approximately $287 million in the fiscal year 2025 budget request.

How much does US military flight simulation save versus live flying hours?

Studies consistently document that high-fidelity flight simulators deliver training that transfers to live performance at rates of 0.4 to 0.8 simulator-hours equivalent to one live flying hour, depending on the training task and simulator fidelity. Given that live flying hours in combat aircraft cost $20,000 to $85,000 depending on the platform, a simulator that delivers training at even one-third the rate of live flying produces a strong return on investment when the simulator hour costs a fraction of that. The Air Force has used documented transfer data to reduce required live flying hours in undergraduate pilot training without measurable degradation in pilot qualification outcomes.

What is the IVAS program and what happened with it?

The Integrated Visual Augmentation System (IVAS) is the US Army's program to field AR headsets based on Microsoft HoloLens technology to infantry soldiers, providing night vision, blue-force tracking, targeting overlays, and navigation data through a head-mounted display. Microsoft won a $480 million prototype contract in 2018 and a $21.88 billion production contract in 2021. Field tests in 2022-2023 produced critical soldier feedback: headaches, nausea, eye strain, and difficulty reading the display in bright outdoor conditions. The Army paused deliveries and Microsoft developed hardware revisions. As of 2026, the program continues in development at reduced scale under ongoing Congressional oversight.

Does the US military use VR for medical training?

Yes - VR and AR are used for Tactical Combat Casualty Care (TC3) training across all branches. VR-based medical simulators let soldiers practice tourniquet application, needle chest decompression, hemorrhage control, and casualty evacuation in realistic scenarios with immediate technique feedback. The US Army Medical Center of Excellence at Fort Sam Houston has integrated VR into its Combat Medic training pipeline, and the CAE VimedixAR system uses AR overlays on physical patient simulators to display internal anatomy during training. VR-based TC3 training is particularly valuable for sustainment training - allowing non-medic soldiers to maintain basic trauma skills between deployments without dedicated instructor time or manikin availability.