The U.S. Army is approaching a significant milestone in its effort to better protect soldiers from the neurological effects of blast exposure, with about 97% of troops having used the Neurocognitive Assessment Tool, according to the service's senior leader for safety and occupational health.
The figure marks one of the clearest signs yet that the Army's campaign to normalize brain health testing is taking hold across the force. The tool is designed to help medical professionals identify changes in cognitive function that may be associated with blast overpressure and repeated low-level blast exposure, hazards that have drawn increasing attention from military doctors, researchers and commanders over the past several years.
Screening Becomes Routine
The Army's near-complete adoption rate suggests the service has moved well beyond pilot-stage experimentation and into operational use at scale. That matters because blast-related injuries are often difficult to detect in the moment. Unlike visible wounds, the effects can be subtle, cumulative and delayed, complicating diagnosis and making early intervention harder.
By embedding neurocognitive testing into routine medical and readiness processes, the Army is trying to build a clearer baseline for each soldier and identify deviations that may signal a problem. In practice, that means the service is not only responding to acute incidents, but also trying to catch the slower, less obvious consequences of repeated exposure during training and operations.
The emphasis on screening reflects a broader shift in military medicine: the recognition that brain health is now a readiness issue, not simply a clinical one. For a force that depends on sharp judgment, reaction time and situational awareness, even modest cognitive changes can have implications for safety, performance and mission effectiveness.
Blast Exposure Under Scrutiny
Blast overpressure has emerged as a major concern across the U.S. military, particularly in environments where soldiers are exposed to weapons fire, breaching operations, artillery, heavy training cycles and other repeated shock events. While the most severe blast injuries are immediately apparent, medical experts have increasingly focused on the possible cumulative effects of lower-level exposure that may not produce obvious symptoms at first.
That concern has driven new attention to screening tools, longitudinal monitoring and better data collection. The Army's use of the Neurocognitive Assessment Tool is part of that broader effort to create a more systematic picture of how blast exposure affects personnel over time.
The challenge is not simply identifying injury after the fact, but understanding patterns before they become disabling. That requires consistent testing, reliable records and commanders willing to treat brain health as part of operational risk management. The 97% usage rate suggests the service is making progress on that front, though the remaining gap also indicates that full implementation still requires attention.
Readiness And Prevention
The Army's push comes at a moment when the U.S. military is under pressure to improve prevention, not just treatment, of service-related injuries. Brain health has become a central part of that debate, especially as researchers continue to study the relationship between repeated blast exposure and long-term neurological outcomes.
For the Army, the practical value of the assessment tool lies in its ability to inform decisions about duty status, medical referral and return-to-training timelines. It also gives leaders a more objective basis for protecting soldiers who may otherwise continue operating while carrying undetected cognitive strain.
The near-universal use of the tool is likely to be welcomed by advocates of military health reform, who have argued that the services need better mechanisms to track the effects of blast exposure across a career, not just after a major incident. It also signals that the Army is increasingly willing to treat brain health as a measurable and manageable component of force protection.
Still, screening alone is not a cure. The broader test for the Army will be whether the data gathered through the tool leads to faster diagnosis, better prevention protocols and meaningful changes in training practices where necessary. If it does, the service could set a standard for how large militaries address one of the most difficult and least visible occupational hazards of modern warfare.