AR in Defense: Smart Glasses, HUDs, and Battlefield Situational Awareness (2026)

Augmented reality has been part of military hardware for longer than most people realize. Fighter pilots have had helmet-mounted displays with targeting cues and navigational data since the 1980s. What has changed in the past decade is the scope of AR's reach within defense - from purpose-built aircraft systems costing millions of dollars per unit to the ambition of fielding AR headsets to every infantry soldier on the battlefield. The results of that ambition have been instructive, revealing both what AR can deliver in defense contexts and where the technology still falls short of operational requirements.

The range of AR applications in defense today spans multiple domains and mission types. Fighter and attack pilots use helmet-mounted display systems (HMDS) that project targeting data, navigation cues, and sensor feeds directly onto their visors. Armored vehicle commanders use see-through AR visors that stream external camera feeds to give panoramic situational awareness from inside a buttoned-up vehicle. Ground soldiers are the intended users of programs like the US Army's IVAS, which aims to put night vision, blue-force tracking, and targeting overlays on every infantryman. Naval applications extend AR to damage control, navigation, and maintenance in shipboard environments.

This analysis covers the current state of AR across these defense domains - examining the programs that have successfully fielded operational capability, the programs that have encountered resistance from the soldiers and pilots expected to use them, and the technical and human factors challenges that continue to constrain the broader deployment of AR on the battlefield. The focus is on what is currently operational or in active development, drawing from publicly available program records, Congressional testimony, and open-source defense reporting.

The Microsoft HoloLens IVAS Program

The Integrated Visual Augmentation System (IVAS) is the US Army's most visible and most scrutinized AR program. Microsoft won an initial $480 million contract in October 2018 to develop a militarized AR headset based on HoloLens technology that would give infantry soldiers night vision, thermal imaging, blue-force tracking, navigation overlays, and targeting assistance through a single device worn with combat equipment. The vision was compelling: a headset combining the functions of night-vision goggles, a digital map, a radio, and a targeting system into one device that a soldier could wear continuously on patrol.

In April 2021, the Army awarded Microsoft a 10-year, $21.88 billion contract for production IVAS units - a commitment that reflected the Army's confidence that the system would transform infantry combat capability. The production contract called for initial deliveries in fiscal year 2022. Soldier field tests conducted in 2022 and early 2023, however, produced critical findings. Soldiers reported significant rates of headaches, nausea, and eye strain during extended wear. The display was difficult to read in bright outdoor conditions, and the system added weight to soldiers' already-heavy combat loads. A formal Army assessment documented that the performance issues were significant enough to affect training effectiveness.

The Army paused deliveries in late 2022 while Microsoft worked on hardware revisions. The pause generated significant Congressional attention, with multiple hearings examining whether the $21.88 billion commitment had been awarded prematurely given the state of the underlying technology. The Army maintained that the IVAS program would continue but acknowledged that the initial hardware version did not meet soldier acceptance criteria. By 2024, the Army was testing an IVAS 1.2 hardware revision that addressed some of the display brightness and ergonomic issues identified in earlier field testing, with further revisions planned. The program continues in development as of mid-2026.

The IVAS program illustrates a broader challenge in defense AR procurement: the gap between laboratory demonstration capability and operational ruggedness in the hands of soldiers who wear, carry, and care for equipment in austere conditions. AR headsets developed for enterprise industrial use - even ruggedized variants - were not designed to survive the physical abuse, temperature extremes, dust, and moisture exposure of dismounted infantry operations, nor to meet the size, weight, and power constraints that determine whether soldiers will wear a device in combat rather than leaving it in their kit.

Helmet-Mounted AR Displays for Pilots

The most operationally mature AR applications in defense are helmet-mounted display systems (HMDS) for military pilots. These systems have been in operational service for decades with a proven track record of enhancing pilot situational awareness and weapons employment capability. The AN/AVS-9 night-vision goggle system and its predecessors have been standard equipment for US helicopter and fixed-wing pilots since the 1980s, providing amplified low-light vision that fundamentally changed night combat operations. Modern HMDS go well beyond image intensification to integrate targeting, navigation, and weapons systems data into the pilot's visual field.

The Joint Helmet Mounted Cueing System (JHMCS and its successor JHMCS II), developed by Elbit Systems of America, is the standard helmet-mounted AR cueing system for US Air Force and Navy F-15, F-16, and F/A-18 aircraft. JHMCS projects a symbolic display onto the pilot's visor showing weapons aiming cues, targeting data, and navigation information that the pilot can reference without looking down at cockpit instruments. Critically, JHMCS enables high-off-boresight missile employment: a pilot can designate a target by looking at it and cueing an infrared-guided missile, dramatically expanding the engagement envelope compared to earlier boresight-only systems.

The F-35 Lightning II's Helmet Mounted Display System (HMDS), developed by Elbit Systems with Vision Systems International as the US manufacturing partner, is the most capable operational military AR display currently fielded. Unlike JHMCS, which overlays data on top of the pilot's normal view, the F-35 HMDS integrates 360-degree distributed aperture system (DAS) camera feeds that allow the pilot to see through the aircraft's skin - looking straight down through the cockpit floor displays the terrain below the aircraft. The system required years of software development and fine-tuning to resolve early issues including helmet fit variability and display jitter before achieving program-of-record reliability.

Ground Vehicle AR: Elbit IronVision

While dismounted infantry AR programs have struggled with the challenges of open-field use, Elbit Systems has successfully fielded an AR display system for armored vehicle crews that addresses a fundamental limitation of modern tank and infantry fighting vehicle design. The IronVision system gives armored vehicle commanders a 360-degree situational awareness view by streaming feeds from multiple external cameras mounted around the hull through a see-through helmet visor worn inside the vehicle. This effectively makes the armored hull transparent to the commander, eliminating the blind spots that have made buttoned-up tank crews vulnerable to dismounted infantry and anti-armor teams throughout the history of armored warfare.

IronVision is operational with multiple military customers and represents one of the most successful applications of AR technology in current defense hardware. The system works within the confined environment of an armored vehicle, where power, weight, and environmental constraints are more controllable than in dismounted infantry operations. The commander sits in a fixed position, the cameras provide consistent coverage, and the display does not need to survive the full range of physical abuse that a dismounted soldier's equipment must endure. These factors create a design space where current AR technology can meet operational requirements reliably.

Thales's TopOwl helmet-mounted display system for military helicopter crews represents a similar pattern of operational success in a controlled environmental context. TopOwl provides helicopter pilots and gunners with FLIR imagery, targeting cues, navigation data, and helmet-slaved weapons cueing overlaid on their field of view. The system is operational on Tiger attack helicopters in the French, German, Spanish, and Australian armies, on NH90 transport helicopters, and other platforms. Like IronVision, TopOwl operates in an environment - a military helicopter cockpit - where the power, connectivity, and physical constraints of the display system are manageable within existing platform architectures.

Ground Soldier Situational Awareness Systems

Below the IVAS program at the full AR headset level, the US military has fielded networked soldier systems that provide digital situational awareness through screen-based interfaces. The Blue Force Tracker (BFT) system uses GPS-based position reporting and a handheld or vehicle-mounted digital map display to give commanders and vehicle crews real-time position data for friendly forces. The Nett Warrior system extends BFT capability to the Android Team Awareness Kit (ATAK) app running on smartphones and tablets, allowing dismounted leaders to share position data, map overlays, and radio-independent messaging across a tactical network.

ATAK and its classified defense variant - the TAK-Server ecosystem - represent the most widely fielded digital situational awareness system in the US military, with hundreds of thousands of devices across multiple branches and allied forces. While ATAK is a screen-based system rather than an AR headset, it establishes the data infrastructure - position feeds, map overlays, threat data - that a head-mounted AR display like IVAS will ultimately tap into to deliver overlaid battlefield information. The AR headset can be understood as a new display modality for data already being generated and distributed across military networks, rather than a new data category requiring new collection systems.

The French Army's FELIN (Fantassin a Equipements et Liaisons Integres) system and its successor SCORPION program represent a European approach to networked soldier situational awareness. FELIN equips infantry soldiers with a networked digital display, weapon-mounted cameras that allow shooting from behind cover without exposing the soldier, and integrated communications. The system has been in service since 2010. The SCORPION program - part of the Armée de Terre's broader combat digitization roadmap - is developing a battlefield AR visor for next-generation French infantry, with Thales leading the AR display component under the SYNAPSE program.

Naval and Maritime AR Applications

Naval AR applications have received less public attention than infantry and aviation programs but represent a significant area of operational deployment and investment. Shipboard maintenance and damage control are natural applications for AR: complex machinery in confined spaces, where technicians must reference technical manuals while performing hands-on repairs, benefits from AR overlays that display component identification, torque specifications, and procedural steps in the technician's field of view without requiring them to look away from the work. Several naval contractors have fielded AR-based maintenance systems that document measurable reductions in repair time and procedural error rates compared to manual-and-screen approaches.

The US Navy has explored AR for shipboard damage control training, where crew members must navigate smoke-filled, disorienting compartments to isolate flooding, fight fires, and render medical aid - tasks where spatial memory and procedural accuracy are critical under stress. AR simulation overlays simulated smoke, fire, and casualty effects onto real shipboard compartments during training exercises, creating a more realistic environment than desk-based scenario software while preserving the ability to stop and debrief within the actual ship layout. Destroyer and amphibious ship crews have conducted exercises using this approach at several Navy training centers.

Submarine navigation and sonar operations represent another domain where AR-style display integration has been applied, though the term AR is typically not used in those contexts. Modern submarine control rooms integrate sensor feeds, navigation data, and tactical information into configurable displays that present an integrated operational picture drawn from sources the crew cannot directly observe. The design philosophy parallels AR - overlaying processed sensor data onto a representation of the operational environment - adapted to the specific constraints of submarine operations where no external visual reference is available.

Real-World Challenges in Military AR

Battery life is a persistent constraint across all military AR applications involving dismounted personnel. Current AR headsets that provide the compute power for real-time rendering, sensor integration, and wireless communication drain batteries in one to four hours depending on load, far short of the eight-to-twelve-hour mission durations typical of sustained ground operations. Adding battery capacity adds weight; reducing power consumption requires hardware and software optimization that takes multiple development cycles to achieve. No current commercial AR headset meets both the battery life and the display performance requirements of sustained infantry operations without external power augmentation.

Durability in military operating environments is a challenge that consumer-derived AR hardware consistently fails to meet initially. Dust ingress, moisture, temperature extremes from below -30 degrees Celsius to above +50 degrees Celsius, and physical shock from falls, vehicle vibration, and the physical demands of combat movement all degrade AR hardware that was designed for warehouse or construction site environments. Military-grade qualification testing under MIL-STD-810 establishes minimum standards, but achieving certification while maintaining acceptable weight and cost is a significant engineering challenge that typically requires multiple hardware generations.

Soldier acceptance is arguably the most important non-technical factor in military AR deployment, and it is one that the IVAS program underestimated. Soldiers are pragmatic about equipment: they will use gear that makes them more effective and discard gear that does not, regardless of institutional enthusiasm for the program. Early field feedback on IVAS was consistent across multiple soldier assessments - the device added weight, generated heat, caused eye strain during extended wear, and created a profile issue by adding visible height to the soldier's silhouette. These are operational concerns that directly affect whether a soldier will wear the device in actual combat conditions rather than stowing it in their rucksack.

Cyber and electronic warfare vulnerability is a concern specific to military AR that does not apply in the same form to enterprise deployments. A networked AR headset that displays blue-force tracking data, targeting information, and commander intent is also a device that can potentially be jammed, spoofed, or detected by an adversary's electronic warfare systems. Defense AR systems must include robust encryption, emission control modes that reduce detectable electronic signatures, and fail-safe operation that remains functional when network connectivity is denied - requirements that add complexity and cost to systems already challenging to develop at the required weight and power budget.

The Road Ahead for Defense AR

Despite the well-documented challenges, investment in defense AR continues at significant scale across NATO nations, Israel, and other major military powers. The operational value proposition - a soldier who can see in the dark, know the position of every teammate without breaking radio silence, and engage targets with assistance from integrated sensors - is compelling enough that program offices have not abandoned the goal when specific hardware programs encounter performance shortfalls. The question is not whether military AR will be fielded at scale, but on what timeline and with which generation of hardware.

The most likely near-term trajectory for infantry AR is an iterative progression through hardware generations that progressively improve battery life, display brightness, weight, and ruggedization of IVAS-type systems while the software and data integration layer - ATAK, blue-force tracking, targeting feeds - continues to mature on existing hardware. The Army's IVAS 1.2 revisions are one step in this process. Parallel programs in the UK, France, and Germany are pursuing their own infantry AR headsets with different hardware choices and qualification standards, providing additional development paths that inform the broader technology maturation curve.

For aviation and armored vehicle AR - where operational results have been more consistently positive - the trajectory is one of incremental capability enhancement rather than fundamental technology uncertainty. JHMCS II successor programs, F-35 HMDS software upgrades, IronVision next-generation variants, and TopOwl successor systems are all in various stages of development by their respective manufacturers, reflecting confidence that the technology works and that the appropriate investment is in additional capability rather than baseline function. These programs provide a useful benchmark for what military AR looks like when the operating environment is engineered to support the technology rather than requiring the technology to survive the open environment.

Frequently Asked Questions

What is the IVAS program and why has it faced criticism?

IVAS (Integrated Visual Augmentation System) 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 worn with combat equipment. Microsoft received an initial $480 million contract in 2018 and a $21.88 billion production contract in 2021. Field tests in 2022-2023 produced critical feedback from soldiers who reported headaches, nausea, eye strain, and difficulty reading the display in bright outdoor conditions. The Army paused deliveries and Microsoft worked on hardware revisions addressing display brightness, ergonomics, and weight. The program continues in development as of 2026 under ongoing Congressional scrutiny.

What AR systems does the US military use in operational aircraft?

The most widely deployed operational military AR system in US aircraft is the Joint Helmet Mounted Cueing System (JHMCS and JHMCS II), developed by Elbit Systems of America. JHMCS is standard equipment on US Air Force and Navy F-15, F-16, and F/A-18 aircraft, providing targeting cues, navigation data, and high-off-boresight missile employment capability through a projective display on the pilot's visor. The F-35 Lightning II uses a more advanced Helmet Mounted Display System (HMDS) that integrates 360-degree camera feeds from the aircraft's distributed aperture system, allowing the pilot to effectively see around and through the aircraft's airframe. US Army helicopter pilots use AN/AVS-9 night-vision goggles and various mission-system display integrations on Apache and Black Hawk platforms.

What are the main challenges preventing widespread military AR deployment?

The primary challenges are battery life (current AR headsets typically last one to four hours under operational load versus the eight-to-twelve-hour mission duration requirement for ground operations), display readability in bright outdoor daylight, weight and ergonomic compatibility with existing combat equipment and protective gear, MIL-STD-810 environmental durability requirements for temperature extremes, dust, moisture, and shock, and soldier acceptance - whether soldiers will choose to wear the device in actual combat conditions. Cyber vulnerability is an additional concern specific to military AR: networked headsets displaying tactical data must include encryption, emission control, and denied-network resilience that add cost and engineering complexity.

How do fighter pilot HMDs differ from infantry AR headsets?

Fighter pilot HMDS and infantry AR headsets both overlay digital information onto the user's visual field, but they operate in fundamentally different environments with different constraints. Pilot HMDs are integrated into existing helmet and cockpit architectures where power is provided by the aircraft and the pilot is in a stable seated position. Display symbology is high-contrast and standardized for quick reference rather than persistent contextual overlay. Infantry AR headsets must be battery-powered, survive dismounted physical activity and adverse weather, operate without a stable physical reference, and provide useful information across a wide range of conditions including day, night, and obscured visibility. These differences explain why pilot HMDS programs have achieved reliable operational capability decades before infantry AR headsets - the latter is a substantially more demanding engineering problem.