The Guard and Reserve Veteran’s Guide to Medical Evidence
If you served in the National Guard or the Reserve, you’ve earned the right to have your service-related health problems addressed.
For you, getting a disability rating for a health condition from the Department of Veterans Affairs (VA) can be a tougher path than it is for full-time service members. Why? The biggest challenge is proving that a health problem started or got worse during a specific time you were on duty, like a drill weekend or annual training.
This guide focuses on the Reserve and National Guard medical evidence you need to gather to help make your case stronger.
Why Your Records Are Different
If you served on active duty full-time, military doctors made your medical history and kept it in one long file. As a Guard or Reserve member, your service is broken up into shorter periods. This makes your medical record look broken up, creating a documentation gap.
This gap is a major issue. A report from the U.S. Government Accountability Office (GAO) found that from 2012 to 2021, benefit applications for Reserve and National Guard members were approved at rates 11% to 20% lower than those for active-duty troops (GAO-24-105400).
The problem isn’t that your injuries are less serious; it’s that it’s much harder to prove the connection between your current health problem and your military service dates.

The Core Goal: Prove the “In-Service Event”
To have a condition considered service-connected, you generally need to show three things:
- A current diagnosis of a health condition.
- An in-service event (a specific accident, injury, or event during your duty) that caused or worsened the condition.
- A medical link (often called a “nexus”) between the event and your current health problem.
For Reservists and Guardsmen, the “in-service event” is often the hardest part. You might have hurt your back during a training exercise or gotten sick during annual training but didn’t see a military doctor right away.
To fix this, you must collect documents and statements that clearly connect your health issue to a specific date and time when you were on duty.
Your Essential Military Documents
While the DD Form 214 is key for active duty, other documents are much more important for your Reserve or National Guard service.
1. The Line of Duty (LOD) Investigation
This is possibly the most valuable piece of evidence you can have.
- An LOD is an official report that decides if an injury or illness happened “in the line of duty.”
- A positive LOD report may be accepted by the VA as official proof of an in-service event.
- If you were injured, try to confirm an LOD was started, and get a copy for your records.
2. Service Records for Short Periods
- DD Form 214-1 (Reserve Component Addendum): This document is key for Reservists. It lists your periods of active and inactive duty training. It is key proof for issues that happened during a shorter duty period.
- NGB Form 22 (National Guard Separation Record): This is the main document for National Guard veterans that proves your service and lists training periods, much like a DD-214.
- Annual Training & Drill Orders: Official orders, training schedules, or memos can help you pinpoint the exact dates and places of duty when a health issue started.
My records were lost. What can I do? If your records are lost or incomplete, you can ask for your Official Military Personnel File (OMPF) from the National Archives. You should also rely heavily on your personal medical records and detailed statements from yourself and witnesses (lay statements) to provide evidence of the in-service event.

Common Health Conditions Seen in the Reserve & Guard
The intense physical training and deployments for the Reserve and Guard often lead to common health issues:
- Musculoskeletal Injuries (MSKIs): These are injuries to your bones, joints, and muscles. Conditions like chronic knee pain, back pain, and ankle/foot issues are highly common due to ruck marches, drills, and physical training.
- Tinnitus and Hearing Loss: Constant exposure to loud noises from firearms, vehicles, and equipment is a big issue. Tinnitus (a constant ringing in the ears) is a very common service-connected condition.
- Post-Traumatic Stress Disorder (PTSD): For those with combat deployments, PTSD may be a service-connected condition. The mental health impact is what the VA will evaluate. This condition could also lead to claiming secondary conditions, such as headaches or chronic pain.
Building Your Medical Evidence Portfolio
Since your in-service medical records may be brief, the best step is to build a strong portfolio of private medical evidence.
The Power of Private Records
Your civilian doctor’s visits and medical history are very important.
- Contemporaneous Records (Immediate Notes): The single most helpful thing you can do is seek treatment immediately after an injury. A visit to an urgent care clinic or your civilian doctor soon after the event is critical. These “contemporaneous” (at the same time) records create a timestamped link between your duty and the start of your symptoms.
- Ongoing Treatment History: Make sure your private records clearly document your long-term symptoms and the treatments you’ve received. This helps show the long-term effect of the injury.
What if I didn’t see a military doctor during a training period? This happens often. In this case, you must rely heavily on your private medical records and lay statements to document the injury. That immediate visit to a private doctor is the next best option.
The Medical Nexus Letter
A Nexus Letter is a written medical opinion from a qualified doctor. This letter needs to be very clear: it must explicitly connect your current diagnosis to a specific event in your military service. For a Guard or Reserve veteran, it must be precise about the duty period and based on a review of all your records.
Lay Statements: Filling the Gaps
When military records are light, statements from you and people who know you are critical.
- Your Own Statement: Write a detailed personal account (using VA Form 21-4138) describing how and when the injury happened during a specific training period. Explain how the symptoms began and how they have affected your life.
- Buddy Statements: Statements from fellow service members, especially a buddy or a leader who witnessed the injury during a drill, give the VA trustworthy details that they might not otherwise have.
The Domino Effect: Secondary Conditions
Sometimes a health problem isn’t a direct result of your service, but a secondary one. This is like a domino effect: one service-connected condition causes or worsens a second condition.
Example: An ankle injury you got during training (the first domino) may have changed the way you walk. Over time, that new gait may cause chronic knee and back pain (the second and third dominos). You could potentially pursue a connection for this knee and back pain as a secondary condition to your ankle injury. A doctor’s medical opinion is necessary to explain this link.
Important Information About Our Medical Evidence Services
We focus on helping you build objective, clear medical evidence that may support your future evaluations.
- Our Focus is Medical Evidence: We help veterans understand their medical history and the evidence needed to support a potential service connection.
- We Do Not Handle VA Applications: We do not file claims, prepare paperwork, or offer legal advice or representation for your VA benefit pursuit.
- You Are in Control: You, the client, always decide what to do with the medical evidence we help you prepare. We do not give instructions on how to file or pursue your benefits.
- No Guarantees: We cannot promise any specific outcome, dollar amount, or benefit eligibility. We only work to provide you with comprehensive medical documentation.



