A buddy letter is a signed statement from someone with firsthand knowledge of the in-service event, current symptoms, or functional impact of the condition. Under 38 CFR § 3.303(a) the VA must consider all pertinent lay evidence; under 38 USC § 1154(b) combat veterans get a relaxed standard where lay testimony of stressors is accepted if consistent with the circumstances of combat. Buddy letters fill the gaps service treatment records leave behind — gaps that defeat otherwise-valid claims.
Buddy letters are signed lay statements from people with direct firsthand knowledge of facts relevant to a VA disability claim. The VA recognizes that service treatment records are often incomplete — events happen in training, in the field, or on deployment that never reach a medical chart. Buddy letters fill that documentary gap.
Under 38 USC § 1154(a), the VA must give “due consideration” to all pertinent lay and medical evidence. For combat veterans, 38 USC § 1154(b) goes further: lay testimony of in-service stressors is accepted if consistent with the circumstances of combat service — no contemporaneous medical record required.
Buddy letters carry particular weight on PTSD claims (where the stressor often lacks paper trail), chronic-pain conditions (where symptoms were present but untreated in service), and conditions that progressed gradually after separation.
Writer's full name and contact information. The VA needs to know who wrote it and how to reach them.
Relationship to the veteran. How they know the veteran, how long, and the context (served together, married, neighbors).
Specific firsthand observations. What the writer personally saw, heard, or experienced — not what someone told them.
Dates and locations. “During our deployment to Kandahar Province from March to September 2010” is dramatically stronger than “during our deployment.”
Signature and date. Include “I certify that the statements made herein are true and correct to the best of my knowledge and belief” for the perjury-grade certification.
What happened, when, where, who was involved, what the writer personally witnessed, and whether medical treatment was sought — and if not, why not. Many service members avoided sick call to prevent being seen as weak or losing duty assignments; that explanation matters for the VA's gap analysis.
Being too vague. “He has a bad back” is useless. “I watched him struggle to get out of a chair on multiple occasions, and he said the pain radiates down his left leg” is specific and credible.
Making medical diagnoses. Lay writers should describe observed symptoms, not diagnose conditions. Per Jandreau v. Nicholson (Fed. Cir. 2007), lay testimony is competent for observable symptoms but diagnosis requires medical competence.
Copying the veteran's statement. If the buddy letter reads like a carbon copy of the personal statement, it loses credibility. Each letter must be in the writer's own words and reflect their unique vantage point.
Including irrelevant information. A letter about PTSD does not need to recite the veteran's entire service history. Keep focus on the specific condition being claimed.
Forgetting to sign and date. An unsigned buddy letter has zero evidentiary value. Signature + printed name + date — every time.
A signed statement from someone with firsthand knowledge of the in-service event, the veteran's symptoms, or the impact of the condition on daily life. Filed under 38 CFR § 3.303(a), which requires the VA to consider all pertinent lay evidence — and under 38 USC § 1154(b) for combat veterans, where lay testimony of stressors is accepted if consistent with the circumstances of combat service.
Anyone with firsthand knowledge: fellow service members (in-service events), spouses or family (continuity of symptoms, functional impact), coworkers and supervisors (work impact and accommodations), and friends or community members (observable limitations).
VA Form 21-4138 (Statement in Support of Claim) is the standard form. A plain typed letter is also accepted as long as it is signed and dated. The form is the cleanest path because it includes a perjury certification.
1-2 pages of focused, specific observations. Raters review hundreds of claims a day. A 5-page letter that wanders is less effective than a 1-page letter with concrete details, dates, and locations.
No. A signature and date are sufficient. Adding the certification phrase "I certify that the statements made herein are true and correct to the best of my knowledge and belief" adds weight without requiring a notary.
Only if the writer is a qualified medical professional. Lay writers should describe what they observe — symptoms, behaviors, limitations — not diagnose. Per Jandreau v. Nicholson (Fed. Cir. 2007), lay testimony is competent for observable symptoms but medical diagnosis requires medical competence.