How Long Does a Military Investigation Take?

Types of Military Investigations

Military investigations are formal processes for determining whether a service member has violated military law or regulations. Each branch, including the Army, Navy, Air Force, Marine Corps, and Coast Guard, has specific procedures for how investigations are started, conducted, and what rights a service member has.

Administrative Investigations (Non-Criminal Fact-Finding)

Administrative investigations are designed to gather facts and recommend corrective action rather than impose criminal punishment. Although they do not result in confinement or a federal criminal record, their outcomes can still be life-changing. These consequences may include separation from the service, loss of benefits, or career stagnation. Here are the examples:

• AR 15-6 Investigations (Army): This is the Army’s standard method for reviewing incidents or misconduct. Findings are based on a “preponderance of the evidence,” meaning it is more likely than not that an event occurred. Consequences can include letters of reprimand, negative evaluations, or administrative separation. Because these findings become part of your official record, it is vital to have legal guidance from the start.

• Command Investigations (Navy, Marine Corps, Coast Guard): These inquiries are governed by service-specific rules and examine accidents, misconduct, or command climate issues. They often begin informally but can be elevated to a criminal investigation if evidence of a UCMJ violation is found.

• Line of Duty (LOD) Determinations: Used primarily by the Army and Air Force, LOD investigations determine if an injury, illness, or death occurred during official duties. The outcome directly impacts eligibility for medical treatment, disability pay, and survivor benefits.

• Equal Opportunity (EO) Investigations: These investigations address claims of discrimination, harassment, or retaliation. While administrative, their findings can influence promotions, leadership roles, and a service member’s reputation.

Administrative investigations are typically conducted through interviews and document reviews. Service members have the right to respond and submit their own evidence. Using this opportunity effectively can prevent inaccurate or one-sided information from harming your career.

Criminal Investigations (Potential Court-Martial)

Criminal investigations are much more serious because they can lead to a court-martial. They are initiated when a command or investigative agency suspects a violation of the UCMJ. The legal standard of proof is “beyond a reasonable doubt.” Potential punishments include confinement, a punitive discharge, and a permanent criminal record.

Here is what is obtainable in criminal investigations:

• CID, NCIS, and OSI Investigations: The Army Criminal Investigation Division (CID), Naval Criminal Investigative Service (NCIS), and Air Force Office of Special Investigations (OSI) investigate felony-level crimes like assault, theft, and fraud. These agencies operate independently of the regular chain of command.

• Article 31(b) Rights: When investigators suspect a service member of an offense, they must read their Article 31(b) rights, which are the military’s version of Miranda warnings. You have the right to remain silent and speak with an attorney. Invoking these rights cannot be used against you.

• Article 32 Preliminary Hearings: Before a case can proceed to a general court-martial, an Article 32 hearing is held to determine if there is probable cause to believe a crime was committed. The accused has the right to be represented by counsel, present evidence, and cross-examine witnesses.

• Investigations with Criminal Implications: Sometimes, an administrative investigation uncovers potential criminal activity. When this occurs, the investigators must stop, advise the service member of their Article 31(b) rights, and restart the process as a criminal inquiry. This is a critical point where legal representation can prevent you from making damaging mistakes.

What to Expect During a Military Investigation

Military investigations follow strict procedures under the Uniform Code of Military Justice (UCMJ) and branch-specific regulations. Whether you are the subject of an investigation or a witness, understanding each phase of the process and your rights under military law can significantly impact the outcome. At our law firm, we carefully and clearly guide service members through every step. This allows you to respond confidently and avoid costly mistakes.

Notification

You will first receive notice that an investigation has begun. This notification may come as a written memorandum, a verbal notice from your command, or a request to provide a statement. You might be contacted by an investigating officer or a criminal investigator from agencies such as CID, NCIS, or OSI. If you are informed that you are a subject (not just a witness), investigators must advise you of your Article 31(b) rights. 

Evidence Collection (Typically 30–90 Days for Administrative Cases)

Investigators gather documents, service records, digital communications, and witness statements during this phase. In criminal investigations, agents may request access to phones, computers, or social media accounts. You are not required to consent to searches or turn over devices without first speaking to your attorney. Forensic and digital analysis can extend this phase considerably, especially in classified or sensitive materials cases.

Interviews and Questioning

Interviews may be informal in administrative matters or formally recorded in criminal inquiries. Investigators might repeatedly approach you to clarify prior statements or present new evidence. Having counsel present or consulting your attorney before any interview ensures your rights are protected and your words are not misinterpreted later.

Preliminary Findings and Response

In many administrative investigations, such as Army Regulation 15-6 inquiries, the investigating officer may draft preliminary findings before submitting the final report. This provides you with an opportunity to review and respond to the evidence. This stage is often your best chance to clarify facts, correct errors, and submit supporting documentation or witness statements. A well-prepared legal response can prevent negative findings from becoming final.

Final Report and Command Review

Once all evidence has been reviewed, the investigating officer or agency completes a final report. This report includes findings, analysis, and recommendations. It is then forwarded to your command for review and approval. Legal advisors, known as Staff Judge Advocates (SJAs), examine the report for procedural accuracy and sufficiency before the command decides whether to take action. Depending on the case, this review can take several weeks or longer.

Possible Outcomes

The final decision depends on the investigation’s findings and the type of case involved. Possible outcomes include:

• No Action / Case Closed: The command determines that no misconduct occurred or that evidence is insufficient.
• Administrative Action: This could include a General Officer Memorandum of Reprimand (GOMOR), relief for cause, or administrative separation.
• Nonjudicial Punishment (Article 15): For minor offenses, the command may impose disciplinary measures without a court-martial.
• Court-Martial Referral: The case may proceed to trial before a military court for serious violations under the UCMJ.

Each step has different implications for your record, benefits, and career progression. Acting early with a clear legal strategy can often prevent a case from escalating to punitive levels.

How Legal Support Can Influence the Timeline of a Military Investigation

Legal representation does not guarantee a shorter investigation, but it can prevent unnecessary delays and help maintain a predictable timeline. Many investigations extend beyond their expected duration because of incomplete responses, missing evidence, or procedural errors that require the command to redo its work.

Preventing Delays from Incomplete Information

Investigations often stall when investigators lack key facts or documents. Timelines can be prolonged when:

• Witness statements are inconsistent or vague.
• Relevant records, such as emails, logs, or reports, are not provided in a timely manner.
• Investigators have to revisit issues because of gaps in the evidence.

Submitting well-organized and complete information at the correct time helps prevent repetitive fact-finding, which can add weeks or months to the investigation.

Ensuring Interviews and Statements Are Efficient

The statements provided during an investigation can significantly affect its duration. Delays may arise when:

• Statements raise new issues that require further inquiry.
• Responses are unclear or incomplete, necessitating clarification.
• Investigators must conduct follow-up interviews to address inconsistencies.

Providing clear and focused responses can reduce the need for multiple rounds of questioning.

Addressing Procedural Issues Proactively

Military investigations are governed by specific regulations, such as AR 15-6 for the Army or command-directed inquiries for other branches. If these procedures are not correctly followed:

• The investigation might need to be reopened or corrected.
• The findings could be delayed pending further review.
• The command may order a supplemental investigation before making a decision.

Identifying procedural errors early can stop the process from being restarted or expanded without cause.

Facilitating Progress at the Command Level

After an investigating officer submits the report, the chain of command reviews the findings before taking action. Delays often occur at this stage when:

• The report is unclear or lacks sufficient supporting documentation.
• Decision-makers request additional analysis or revisions.
• A legal review identifies problems that must be corrected.

A well-prepared submission helps reduce the back-and-forth between the investigator and the command, facilitating a final decision.

Managing Investigations Across Different Duty Locations

For service members stationed away from Georgia or deployed overseas, logistical challenges can impact the timeline. Delays are common when:

• Communication with legal counsel is difficult due to location or duty schedules.
• Time zone differences slow down document review and correspondence.
• Access to necessary records or witnesses is restricted.

An experienced defense team accustomed to representing service members globally can help manage these logistical issues and keep the investigation on track.

Secure Your Career Before the Findings Are Final

No matter which type of military investigation you face—administrative or criminal—the decisions you make today determine your military future. We combine global reach with focused military law experience, supporting servicemembers worldwide.

Military investigations rarely follow a set timeline. Some cases wrap up quickly; others stretch far longer than anyone expects. The uncertainty can be paralyzing—but you can act with confidence and power by working with a law firm that knows both the challenges you face and the opportunities for proactive defense.

Don’t try to navigate this process on your own. Contact our military defense law firm today to build your defense, restore control over your future, and put experience on your side—no matter where you serve.

Frequently Asked Questions About Military Investigations

• How long does an administrative military investigation typically take?

Administrative investigations, such as Army Regulation 15-6 inquiries or Navy Command Investigations, typically take between 30 and 90 days to complete.

• How long do military criminal investigations by CID, NCIS, or OSI usually last?

Military criminal investigations for felony-level offenses generally take between six months and a year, especially when forensic analysis or law enforcement coordination is required.

• What are Article 31(b) rights during a military investigation?

Article 31(b) rights require investigators to inform a suspected servicemember of the alleged offense, their right to remain silent, and their right to consult with legal counsel.

• What is the purpose of an Article 32 preliminary hearing?

An Article 32 hearing is held prior to a general court-martial to determine whether probable cause exists to believe a crime was committed under the Uniform Code of Military Justice.

• What happens if an administrative investigation uncovers potential criminal activity?

Investigators must pause the administrative inquiry, advise the servicemember of their Article 31(b) rights, and restart the process as a formal criminal investigation.

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