Core records
VA identifies records such as separation documents, service treatment records, and medical evidence related to the claimed illness or injury as common evidence sources.
Lay evidence
VA also accepts lay evidence, including statements from the Veteran or others with personal knowledge of relevant events, symptoms, or changes.
Label evidence by purpose
Instead of storing documents as one undifferentiated stack, note the condition, date range, source, and what the document is intended to show. This makes later review faster and clearer.