Communicating With Military Personnel: Ranks, Titles, and Written Requests

Write to a service member using the rank and last name shown in their signature block, and check the service before you shorten a title: an Army captain is an O-3, a Navy captain an O-6. Put any request in writing, say exactly what you need and by when, and include the service member’s written consent or a court order when you are asking for their records. If you are a lawyer representing a client and know the service member has a lawyer in that same matter, discuss the subject of that matter through their lawyer.

Sources checked: September 26, 2026

Same title, different grade

Rank titles are not shared across services the way pay grades are. The four grades below show where titles and abbreviations diverge:

Sources for the table: army.mil, ranks, <a href="https://en.wikipedia.org/wiki/Pettyofficerthirdclass”>Wikipedia, Petty officer third class, <a href="https://en.wikipedia.org/wiki/Captain(UnitedStatesO-3″>Wikipedia, Captain (O-3)), <a href="https://en.wikipedia.org/wiki/Lieutenantcolonel(UnitedStates”>Wikipedia, Lieutenant colonel), <a href="https://en.wikipedia.org/wiki/Colonel(UnitedStates”>Wikipedia, Colonel), <a href="https://en.wikipedia.org/wiki/UnitedStatesNavyofficerrankinsignia”>Wikipedia, Navy officer ranks.

Three things follow from the table:

• “Captain” needs a service. The Army, Marine Corps, and Air Force captain is “equivalent to the rank of lieutenant in the Navy/Coast Guard officer rank system and is different from the higher Navy/Coast Guard rank of captain” (<a href="https://en.wikipedia.org/wiki/Captain(UnitedStatesO-3″>Wikipedia)).
• The Navy has no corporal. Its E-4 is a petty officer third class, “equivalent to a corporal in the U.S. Army and Marine Corps” (<a href="https://en.wikipedia.org/wiki/Pettyofficerthirdclass”>Wikipedia).
• Abbreviations differ by service. “The U.S. Army uses the three letter abbreviation “LTC,” while the Marine Corps and Air Force use the abbreviations of “LtCol” and “Lt Col” (note the space), respectively” (<a href="https://en.wikipedia.org/wiki/Lieutenantcolonel(UnitedStates”>Wikipedia)). Copying the abbreviation from the person’s own signature block avoids the problem.

Warrant officers are a separate track. In the Army, they “are officially addressed as Mr. or Ms./Mrs. and warrant officers of grades CW2-CW5 can also be referred to as ‘Chief'” (<a href="https://en.wikipedia.org/wiki/Warrantofficer(UnitedStates”>Wikipedia, Warrant officer)).

If you cannot tell a person’s rank, “Mr.” or “Ms.” with the last name avoids guessing wrong; ask for the correct title in your first message. The difference between a rank and a grade is defined in the glossary of legal and administrative terms.

How to write a request that can be acted on

A request can be acted on when the reader sees what is being asked, who is asking, and on what authority. A usable request has five parts:

1. The subject line names the person and the item. “SGT Jane Doe: signed lease termination acknowledgment” tells the reader what the message is before it is opened.
2. One request per message, so each can be routed to the office that owns it.
3. The exact thing you need. A document by name, a decision, or a date, not “any information you have.”
4. What allows the office to release it. Federal privacy law bars an agency from disclosing a record from its records system to anyone “except pursuant to a written request by, or with the prior written consent of, the individual to whom the record pertains,” subject to listed exceptions, one of which is disclosure “pursuant to the order of a court of competent jurisdiction” (5 U.S.C. 552a). A signed written consent from the service member is the most direct route. A subpoena is not listed as an exception, and whether a power of attorney is enough depends on its wording and the agency’s procedures, so ask the office what it will accept before you rely on either. Without consent or an exception, the office may be barred from answering.
5. A date and a way to reply. State when you need it and give one address or phone number.

Confirm anything agreed by phone in a short written follow-up the same day, so the record survives a move or a change of command.

Who to write to

The right addressee depends on who can act: a decision about the service member belongs to a commander at a level fixed by law, and the legal offices each serve a different client. Which commander decides what is laid out in who has authority over a matter. Writing to a commander about a service member’s private debt or dispute is not a substitute for the legal process; the federal rules that govern landlords, lenders, and plaintiffs dealing with service members are on the SCRA and USERRA overview.

If you are a lawyer

The ABA’s model rule on represented persons applies here as it does anywhere: “a lawyer shall not communicate about the subject of the representation with a person the lawyer knows to be represented by another lawyer in the matter, unless the lawyer has the consent of the other lawyer or is authorized to do so by law or a court order” (<a href="https://www.americanbar.org/groups/professionalresponsibility/publications/modelrulesofprofessionalconduct/rule42communicationwithpersonrepresentedby_counsel/”>ABA Model Rule 4.2). A service member facing a court-martial, NJP, or separation may have a defense counsel from the service’s defense office; if you represent another party, ask the member whether they have counsel before discussing the matter. Your own state’s version of the rule is the one that binds you.

Before sending anything, check three points: the title matches the person’s service, the request carries the authority to release what you ask for, and the addressee is the office that can act. This page gives general guidance on correspondence; a specific command’s procedures and the law of your jurisdiction govern the details.