Military Defense Investigation Knowledge Base
Military Defense Investigation Authority Publication
Authority Publication No. DI-127
Connecting Medical Findings to the Alleged Event Without Overstating What the Records Prove
Independent Military Defense Investigations
Supporting Attorneys, Service Members, and Families
Publication Date: August 24, 2026
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Executive Summary
Medical evidence in military investigations should be evaluated by separating observed findings, patient history, diagnosis, causation, timing, and alternative explanations.
Medical records can document important findings without necessarily establishing exactly how, when, or why those findings occurred. A later summary may assign a specific mechanism or time even when the treating record itself is more limited.
DI-127 explains how defense investigators can separate observed findings from patient history, diagnosis, causation, timing, and alternative explanations. It emphasizes obtaining complete clinical records, images, diagrams, and laboratory results rather than relying only on summaries.
The investigator should also document the timing of examination and treatment, identify provider qualifications, preserve the exact language of medical opinions, and trace every material statement back to its original source. When counsel determines expert review is appropriate, qualified experts should receive complete underlying materials and clearly defined questions.
The objective is not to reject medical evidence automatically. It is to preserve the distinction between observation and causation, identify what the medical source actually establishes, and accurately report the limits of the evidence.
DI-127 explains how defense investigators evaluate medical findings by separating observation, patient history, diagnosis, causation, and timing while preserving complete clinical records and the exact limits of medical opinions.
Who Should Read This Publication?
Military Defense Counsel
Use the original medical record and documented limitations to identify issues requiring additional discovery, expert consultation, evidentiary analysis, or litigation strategy.
Defense Investigators
Obtain complete clinical records and images, reconstruct medical chronology, identify provider qualifications and exact opinion language, and trace later medical conclusions back to their original sources.
Service Members
Understand why a documented injury does not necessarily establish a unique cause, mechanism, or time and why the defense may need the complete medical record rather than a summary.
Qualified Medical Experts
Review complete underlying clinical materials and clearly defined questions concerning diagnosis, causation, timing, mechanism, alternative explanations, or limitations when counsel requests expert analysis.
Families
Understand why preserving medical records, photographs, timelines, and other relevant documentation can matter, while leaving medical interpretation and investigative decisions to counsel, investigators, and qualified experts.
Companion Video
This companion video expands on the investigative concepts presented in this Authority Publication through additional explanation, practical examples, and professional investigative insight.
About Michael West
The investigative guidance presented throughout these Authority Publications is based upon decades of professional experience conducting military, federal, criminal, civil, and private investigations. The principles discussed in these publications are drawn from real investigative work involving complex cases, witness development, evidence analysis, and factual case preparation.
Michael West has served as a Special Agent with the United States Air Force Office of Special Investigations (AFOSI) and the Department of Defense Inspector General, conducted federal background investigations, and spent decades working as a licensed private investigator supporting attorneys, businesses, service members, and private clients. Throughout his career, his work has focused on identifying facts, locating witnesses, analyzing evidence, and strengthening the factual foundation of legal cases through independent investigation.
The Military Defense Investigation Knowledge Base was created to share that investigative experience in a practical, understandable format. Its purpose is to help attorneys, service members, and families better understand the investigative process, ask more informed questions, and recognize opportunities where independent investigation may strengthen the defense.
Important Information
This Authority Publication is provided for educational and informational purposes and is intended to help readers better understand military defense investigations and the investigative process. It is based upon professional investigative experience and is designed to provide practical investigative insight rather than legal advice.
Every military case is unique. The investigative strategies, factual issues, and legal considerations applicable to one case may not apply to another. Readers should consult with a qualified attorney regarding legal rights, legal strategy, and decisions involving their individual circumstances.
Nothing contained in this publication should be interpreted as creating an attorney-client relationship or an investigator-client relationship. References to investigative techniques, procedures, or case examples are provided solely to illustrate investigative principles and should not be considered legal guidance.
Effective military defense is strengthened by informed legal representation supported by thorough factual investigation. The purpose of these Authority Publications is to help readers better understand that investigative process so they can communicate more effectively with qualified legal counsel and make informed decisions throughout the military justice process.
