Conducting Defense Investigations Overseas: Witnesses, Translators, and Host-Nation Records

Independent Military Defense Investigations

Supporting Attorneys, Service Members, and Families

Publication Date: August 24, 2026

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Executive Summary

DI-102 explains how defense teams can lawfully locate overseas witnesses, manage translators, preserve foreign-language evidence, and evaluate host-nation records.

Evidence does not become reliable merely because it crossed an ocean or arrived with an official-looking translation.

An overseas defense investigation must account for language, jurisdiction, local procedure, time zones, security, travel, data-transfer restrictions, and the practical limits of obtaining records from foreign custodians.

DI-102 provides a structured method for identifying overseas sources, coordinating lawful access through counsel, using qualified interpreters, preserving original material, documenting translations, and authenticating host-nation records. It emphasizes that compulsory process available in a court-martial may not automatically reach a foreign citizen, business, or government office.

The objective is a transparent record that allows counsel to determine what was confirmed, what remains disputed, and whether a limitation arose from missing evidence, restricted access, language, or local law.

Who Should Read This Publication?

Military Defense Counsel

Plan lawful access, production requests, witness contact, translation review, and authentication while accounting for host-nation law, applicable agreements, and litigation deadlines.

Defense Investigators

Build a source-and-custodian map, document every overseas contact and collection step, use interpreters neutrally, and preserve original records with traceable translations.

Service Members

Understand why overseas evidence may require additional time and legal process, and why informal witness contact or self-obtained records can create avoidable problems.

Experts

Evaluate defined language, cultural, digital, accounting, or authentication questions without extending an opinion beyond the available source material.

Families

Help preserve travel documents, messages, receipts, contact information, and original records without contacting witnesses or foreign authorities independently.

Download the Official Authority Publication (PDF)

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.