An allegation is not a conviction, but the investigation starts immediately

When a service member learns that someone has accused them of sexual assault, the natural impulse is to explain, confront the accusation, contact the other person, or send messages to mutual friends. Those reactions can create new evidence and new allegations. The first objective is narrower: learn your status, stop uncontrolled communications about the facts, preserve evidence, and obtain legal advice before deciding whether to make a statement.

Military sexual-assault cases commonly move through CID, NCIS, or OSI and, for covered offenses committed on or after December 27, 2023, the Office of Special Trial Counsel plays the central prosecution role. That means the investigation can be shaped by professional prosecutors well before a charge sheet appears. The defense should treat the pre-charge period as part of the case, not as a waiting room.

Your Article 31 rights apply before charges

Article 31(b), UCMJ requires that a person subject to the UCMJ who interrogates or requests a statement from an accused or suspect first identify the nature of the accusation, advise that the person does not have to make a statement, and warn that any statement may be used as evidence at a court-martial. Military Rule of Evidence 305 adds the rules governing warnings, waiver, counsel, and admissibility. These protections are broader in important respects than the civilian shorthand people associate with Miranda.

Invoking rights does not determine guilt. It preserves the decision whether to speak until counsel understands the allegation and the evidence. Do not contact the complaining witness to seek a retraction or explanation. Do not ask friends to do it for you. Preserve existing communications and let counsel decide how potentially favorable witnesses and records should be approached.

Preserve the defense before the evidence changes

Early defense work is not limited to telling a client to remain silent. Messages disappear, apps update, cloud accounts roll over, surveillance video is overwritten, witnesses transfer, memories change, and phones are replaced. Preserve potentially relevant texts, photographs, call logs, social-media records, receipts, travel records, location information, medical records, and names of witnesses. Do not delete, edit, manufacture, coach, or conceal evidence. A defensible preservation plan protects both favorable evidence and its authenticity.

For digital evidence, screenshots may be useful for orientation but are not always the best final proof. Native files, full message threads, export data, metadata, and forensic images can become important. Serious cases often require counsel to decide early whether a defense digital-forensics expert should preserve or analyze devices before the government theory hardens.

Why Article 120 investigations become evidence-intensive

Many cases turn on what happened before and after the alleged sexual act rather than on a single forensic test. Messages can bear on relationship context, plans, contemporaneous reactions, intoxication, memory, motive, and later accounts. Medical records and SANE documentation may matter, but the absence or presence of injury rarely answers every legal question. Toxicology can illuminate timing and impairment but often requires careful interpretation. Location data, ride records, photographs, access logs, and social media can test timelines.

For the defense, the important question is not whether one item “proves innocence.” It is whether the full record supports or undermines the government’s particular theory under Article 120. The firm’s Article 120 prosecution and defense process guide explains the modern path, including the Office of Special Trial Counsel and evidence motions under M.R.E. 412, 413, and 513.

Interviews, phones, consent searches, and credentials are separate decisions

An interview request is one decision. A request to unlock a phone, provide a passcode, sign a consent form, surrender an account, identify a device, or permit a search is another. Do not treat them as one package merely because an agent presents them during the same meeting. Search authority can come from consent, a search authorization, or another lawful basis, and the legal analysis can be highly fact specific. Before voluntarily expanding government access to digital evidence, obtain case-specific advice.

What not to do after learning of the allegation

• Do not delete messages, photos, apps, accounts, or browsing history.
• Do not contact the accuser to “clear things up.”
• Do not coordinate stories with friends or potential witnesses.
• Do not post about the case on social media.
• Do not consent to searches or interviews simply to appear cooperative without understanding the consequences.
• Do not assume that because no charges exist, the matter is minor.

Why trial experience matters before trial exists

Gonzalez & Waddington, LLC is a civilian military defense firm representing U.S. service members worldwide. Michael Waddington is a former Army JAG prosecutor, Trial Defense Counsel, and Senior Defense Counsel with more than 25 years in military criminal defense and more than 200 contested trials. His work includes books and teaching on cross-examination, digital forensics, forensic evidence, and trial advocacy. Alexandra Gonzalez-Waddington is a founding partner with more than two decades of criminal and military defense experience and is an author or co-author of books addressing sexual-assault defense, digital forensics, DNA evidence, and courtroom advocacy.

Investigation-stage decisions should be made by asking what the evidence will look like if the matter later becomes an Article 15, administrative separation, Board of Inquiry, or court-martial. The value of experienced defense counsel is not a promise that an investigation will disappear. It is the ability to protect rights, preserve favorable evidence, identify factual and forensic weaknesses, communicate strategically when appropriate, and avoid creating evidence that did not previously exist.

How to evaluate counsel during an investigation

Related UCMJDefense.com authority guides

• Military Investigation Defense Lawyers — the investigation-cluster hub for CID, NCIS, OSI, and CGIS
• Military Investigation Rights — Article 31, searches, titling, indexing, and investigation consequences
• Under Military Investigation: Should You Talk? — a direct guide to interrogation decisions
• Pretrial Stages of a Court-Martial — how an investigation can progress toward charges and referral
• Article 120 Cases: Prosecution & Defense Process — the substantive Article 120 process pillar
• Office of Special Trial Counsel — who controls covered-offense charging decisions

Primary authorities

Verify current law in Article 31, UCMJ (10 U.S.C. § 831), the current Manual for Courts-Martial including M.R.E. 305, and agency/service policies applicable to the investigation. For the charging sequence, see the firm’s pretrial stages guide and preferral and referral guide.