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0141E5

Postal Clerk

E-5 (Sergeant) · Marines

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

Sgt postal chiefs run small sections with large accountability — a battalion's mail is your program, not your supervisor's. The battalion S1 calls you, not the postal officer, when the congressional inquiry lands. When the MPO stands up in 48 hours on a MEU workup, it stands up because you built the package. Own that.

The Honest MOS Read
Sergeant 0141 is the section chief rank in the Marine Corps postal community — the senior enlisted Marine running the postal program for a unit or installation, advising the postal officer on operational decisions, and standing up or collapsing the MPO around every deployment cycle. At Sgt, the section runs through your decisions. 'The postal officer told me to' is not an answer for a log error on your watch. The daily load is deeper than the Cpl's window-and-log rhythm. You manage accountable mail volume for a battalion-sized element — registers, certified, priority, official — and keep the log current for the postal officer's daily review. You coordinate with the installation postal officer and the USPS/DoD supporting agency for stock replenishment: money order stock, customs forms, accountable mail stock. You write FitRep Section A inputs for your Cpls. You manage the section's NAVMC 3500.33 collective task evaluation schedule. You brief the postal officer and the battalion S1 on discrepancy status and congressional inquiry response paperwork. Congressional inquiries are the accountability pressure that arrives unexpectedly and requires an immediate, documented, formal response. When a service member's family contacts their congressional representative about a missing deployment mail piece, the congressional liaison office routes the inquiry to the S1, who routes it to you. The response is not a phone call and a promise — it is a formal, written, chain-of-custody documented response that traces every contact point from the piece's entry into the accountable mail system forward. The Sgt who has kept the registered mail log current and initiated discrepancy reports properly has a paper trail to work from. The Sgt who has not is trying to reconstruct events from memory under the S1's deadline. Standing up a deployed Military Post Office is the signature operational capability at this rank. The MPO stand-up package includes the equipment manifest, the accountable stock transfer documentation, the opening inspection record, the vault initialization, the log initialization, and the postal officer's brief on the section's readiness before the first window opens. The battalion XO gives you a timeline — 48 hours is not unusual on a MEU workup — and you have to deliver a functioning MPO at the end of it. The Marine who has done this once knows why the opening inspection documentation is the first record the Inspector General looks for on the post-deployment review. The Sgt board runs through composite score and FitRep profile. The FitRep relative value the postal officer assigns you against the MOS peer group is the primary promotion input at E-5; the composite score (PFT/CFT, rifle qual, MCMAP, education, awards) is the supporting input. Read MCO 1400.32 and MCO 1610.7 before you start asking the section GySgt about your board timeline — understand the mechanics of what you are being evaluated on before you try to manage the outcome.
Career Arc
  • 01Cpl to Sgt pin-on via composite score cutting score under MCO P1400.32D.
  • 02Assume section chief responsibility — FitRep Section A inputs for Cpls, section T&R evaluation schedule, postal officer daily brief.
  • 03First deployed MPO stand-up as the senior enlisted Marine — opening inspection to first window.
  • 04Sergeants Course completion — in-residence preferred; required before the SSgt board.
  • 05Brown Belt MCMAP minimum; section Marines watch what you carry.
  • 06Congressional inquiry response experience — paper trail maintained from day one of section chief responsibility.
  • 07SSgt composite and FitRep profile managed proactively — the SSgt board is FitRep-driven.
Common Screwups
  • ×Verbal resolution of a congressional inquiry without a formal documented response through the chain. The congressional liaison office requires written documentation; an oral assurance from the section chief is not a response.
  • ×Signing the vault reconciliation for a Cpl who ran the count without a supervisory check. Your signature certifies the count; if the Cpl's count was wrong, the discrepancy report has your name at the top.
  • ×Writing a FitRep that inflates a Cpl who cannot run the window independently. The next command discovers this on the first field deployment and your section chief credibility goes with it.
  • ×Letting a discrepancy age past 30 days without a documented status update. DoD 4525.6-M has reporting timelines; an aged discrepancy without current documentation is an Inspector General finding.
  • ×NJP or financial misconduct at Sgt — the trust required to run an accountable program at the unit level is permanent. A misconduct event at this rank ends the postal career track and, in the case of financial misconduct involving the money order program, potentially the military career entirely.

A Day in the Life

  • 0500Wake. Phone check — any overnight issues with section Marines. PT uniform on.
  • 0530PT formation. Accountability reported through the chain. Section Marine status confirmed.
  • 0545–0700Unit PT. 1st-Class standards maintained — you run at the front, your section watches. No exceptions for operational busyness.
  • 0700–0830Hygiene, chow, utilities. Pre-section opening: Cpls instructed on day's priorities, distribution schedule confirmed, any special handling noted.
  • 0830Morning formation. Tasking confirmed. Any congressional inquiry status updates or discrepancy follow-up items flagged for the postal officer's morning brief.
  • 0900Daily postal officer brief — registered mail status, money order log balance, open discrepancy age and status, congressional inquiry pipeline. Truth only, one page.
  • 0930–1130Section supervision — Cpl NCO running the window, you supervising and handling any issues the Cpl escalates. Official mail distribution if due. Any FitRep section A writing or Pro/Con preparation scheduled this week.
  • 1130–1300Window close. Vault status check before chow. Any discrepancy status updates done before the afternoon session.
  • 1300–1500Afternoon window, T&R training for section collective tasks if scheduled, FitRep input preparation, discrepancy report follow-up, battalion S1 coordination if congressional inquiry is active.
  • 1500Section close-out. Vault reconciliation reviewed — you check the Cpl's count, not trust it unverified. Registered mail log against vault pieces. Any gap documented before closing.
  • 1530Final formation. Next day planning. Sensitive items secured. Section close-out documented.
  • 1630Liberty call on standard schedule. Duty and field rotations as assigned.
  • 1700–2000Personal time. Gym, Sergeants Course or CDET coursework, MCMAP belt prep. Section Marine welfare check if any issues were flagged during the day.
  • Deployed / forward MPOYou run the entire program. Mail arrives on the logistics schedule. Congressional inquiries route to you. The opening inspection document is signed before the first window opens. The vault travels, the log travels, the standard travels. What you do here is what the IG reads about the section in the post-deployment review.

Weekly Cadence

The Sgt postal section chief's week is an accountability management cycle with a supervision and reporting layer. Monday is the weekly reset: registered mail summary for the postal officer, discrepancy age check (any open item crossing a threshold needs a status update today), and the week-ahead training plan for the section. The Monday morning accountability brief is the postal officer's read on whether the section ran clean over the weekend. Mid-week is the operational steady state: window supervision, distribution runs, vault counts verified, section collective task training if scheduled. Wednesday is the typical midpoint check — are the week's operational priorities on track, are any discrepancies aging toward the 30-day threshold, is the section's T&R schedule current? The Sgt who does not wait until Friday to find out the answer to those questions is the Sgt whose Friday close-out is routine. Fridays are administrative consolidation: the week's records reviewed, open discrepancies updated, FitRep input notes drafted if cycle end is approaching, section training completion documented in the T&R record. The postal officer's end-of-week review is a reflection of the section chief's week — the Sgt who runs a clean Monday-Thursday has a clean Friday review. Field operations and deployment cycles compress everything into the operational rhythm. The section chief who maintained clean records in garrison is the one the postal officer trusts to maintain them in the field.

Key Skills — How to Drill Each

  1. 01
    Stand up a deployed Military Post Office from opening inspection to first operating window — equipment, accountable stock, vault, log initialization, postal officer brief — on the timeline the XO gives you.
    Build the MPO stand-up package before you need it: equipment manifest (scales, seals, accountable stock, forms), accountable stock transfer documentation, vault initialization procedure, log initialization format, and the opening inspection checklist that becomes the first record the IG reviews post-deployment. Walk through a dry run of the stand-up with your Cpls before the deployment cycle begins. The 48-hour timeline is not a planning assumption — it is a real operational constraint on MEU workups. The Sgt who has the package built and rehearsed delivers a functioning MPO on time; the Sgt who builds it from scratch under time pressure misses the opening inspection documentation.
  2. 02
    Manage accountable mail volume for a battalion-sized element — registers, certified, priority, official — with the accountability log current for the postal officer's daily review.
    At battalion level, the volume of accountable mail during a deployment cycle can be significant — every care package, every registered letter, every official mail piece for the battalion's command element runs through your log. Build a tracking matrix beyond the basic log: pieces received by date, pieces delivered by date, pieces in process by category. The postal officer's daily review should be a one-page status, not a dig through the raw log. Pre-summarize. The day the XO asks for a mail accountability status brief in the next hour is not the day to start organizing the records.
  3. 03
    Write clean FitRep Section A entries for Cpls — observable standards-based behavior, action-result-impact, signed by the postal officer without revision.
    FitRep Section A is the narrative that supports the relative value the postal officer assigns. Write in action-result-impact format: what the Marine did, against what standard, with what measurable outcome. Avoid generalities ('outstanding Marine') and avoid subjective characterizations ('brilliant'). Write what you observed: 'Cpl [Name] maintained zero accountability gaps across 847 accountable mail pieces during the deployment, initiating four discrepancy reports that all closed within standard timelines.' The postal officer cannot improve on that language — he can only sign it.
  4. 04
    Conduct or supervise a Money Order Accountability Audit per DoD 4525.6-M — stock on hand, sequence reconciliation, sales log, deposits — and produce a clean audit report.
    The audit is the formal validation of the section's day-to-day accountability discipline. Read the DoD 4525.6-M audit procedures chapter before you run your first supervised audit. The audit report traces from opening stock to current balance: issues by sequence number, sales by date, deposits reconciled against sales, current on-hand stock counted and sequenced. A clean audit report is the product of clean daily accounting — if the daily vault counts have been honest, the audit is a restatement of what you already know. If the daily counts drifted, the audit is where the drift surfaces.
  5. 05
    Brief the postal officer and battalion S1 on postal discrepancy status, congressional inquiry response paperwork, and accountability trends — complete picture, no softening.
    The postal officer cannot make good decisions with incomplete information. Brief the complete picture: open discrepancies with age, status, and estimated closure; congressional inquiry status with the response paperwork's current position in the routing chain; accountability trends that suggest a systemic issue versus a one-time event. The S1 who gets surprised by a discrepancy he should have known about does not send the Sgt good efficiency marks. Brief the truth early and the S1 trusts the section. Soften the picture and the trust evaporates on the first discrepancy you did not flag.
  6. 06
    Train postal section Marines through the NAVMC 3500.33 collective tasks — section running as a functional unit, not just individuals with individual qualifications.
    Individual task sign-off is the Cpl's job. Your job at Sgt is the section collective task evaluation — can the section receive a battalion's mail distribution, process a full day's outgoing volume, run the money order window, and close out all accountability records by the end of the operating day, together, without you supervising each step? Build the section training schedule around the NAVMC 3500.33 collective tasks: schedule the evaluation, run the rehearsal, execute the evaluation, document the results. The section that can run a collective task evaluation clean is the section the postal officer is confident deploying.

Manuals & References — What Chapters Matter

  • DoD 4525.6-M — Department of Defense Postal Manual
    Your primary governing document at the section chief level — you are now advising the postal officer from it, not just complying with it. The audit procedures chapter, the discrepancy reporting timelines, and the congressional inquiry response chapter are the three sections most relevant to the section chief's daily decisions. When a discrepancy ages or a congressional inquiry arrives, the postal officer opens this document; you should have already read the chapter.
  • MCO P1000.9 — Marine Corps Postal Regulations
    The Corps-level policy implementation — you should know it well enough to brief it chapter and verse to a newly reporting Cpl. At Sgt you are the person the postal officer asks when he has a policy question about a specific procedure. If you are looking it up in front of him, you have not owned the document well enough.
  • USPS Publication 38 — Postal Operations Manual for overseas/military post offices
    The technical reference for APO procedures, customs, and official mail distribution. At Sgt you are building training programs from this document — know not just what it says but which sections your Cpls most commonly make errors against. The customs section and the official mail distribution chapter are the highest-error-rate areas for junior Marines.
  • NAVMC 3500.33 — Administrative MOS Training and Readiness Manual
    At Sgt you build the section training plan against the collective tasks in this manual. The unit T&R review checks your work — the collective task list, the evaluation schedule, the completion documentation. Own the manual before you build the plan.
  • MCO 1610.7 — Performance Evaluation System
    You write FitRep Section A inputs for your Cpls. The relative value mechanic at the E-5 level — how the postal officer assigns the value against the MOS peer group — feeds the SSgt board. Read the Section A narrative guidance and the criteria for each relative value tier. The FitRep you write on a Cpl at Sgt is the document the SSgt board reads about that Marine in three years.
  • MCO P1400.32D — Marine Corps Promotion Manual (Enlisted)
    The SSgt board runs through FitRep profile and composite score mechanics defined here. Understand the FitRep relative value weighting for the SSgt board before you start asking the GySgt about your promotion timeline. The Sgt who understands the mechanics manages the inputs; the Sgt who does not waits for the outcome.

Standards — How to Hit Each

  • Sergeants Course graduate — required PME, required before the SSgt board.
    Slot through the section GySgt's nomination. In-residence is the preferred option; distance education through CDET is available. Do not default to distance because the section is short — the in-residence experience and the selection board read of in-residence versus distance PME are materially different. Pull the slot early; get on the nomination queue before the section GySgt has to push it.
  • Brown Belt MCMAP minimum; section Marines watch what you carry.
    MCMAP belt progression at Sgt is the visible signal that the standard you hold your section to is the standard you hold yourself to. Brown Belt is the bar; Black Belt is the signal that moves the section. Schedule the tape with the installation's senior MCMAP instructor; do not let the operational tempo push the belt progression off indefinitely.
  • Zero unresolved postal discrepancy reports older than 30 days.
    Every open discrepancy has a paper trail, a current status update, and an estimated closure date in the log. Pull the discrepancy log weekly, check the age of every open item, and update the status before the 30-day mark. The IG does not distinguish between discrepancies that were being worked and discrepancies that were being ignored — the paper trail is the evidence.
  • Section Money Order Accountability Audit clean at every annual audit cycle.
    The clean audit is the product of clean daily accounting. If the daily vault counts have been honest and current, the annual audit is a restatement of what you already know. Build the audit package as you go — the daily vault reconciliation sheets, the monthly sales summaries, the deposit records — rather than assembling it from scratch when the audit date arrives. One failed audit is a report to the CO and a note on the section's inspection record.
  • FitRep relative value above the postal MOS peer group median at the SSgt board.
    The FitRep profile at Sgt feeds the SSgt board directly. Read how the postal officer assigns relative value against the MOS peer group — MCO 1610.7 defines the mechanics — and understand where you sit. The Sgt who asks the postal officer directly how his FitRep relative value compares to the peer group is the Sgt who gets an honest answer before the board cycle, not after.

Technical Mistakes — Concrete Consequences

  • Letting a discrepancy age without a documented status update.
    DoD 4525.6-M has timelines for discrepancy reporting and resolution. An aged discrepancy without a current documentation trail converts a lost package into an Inspector General finding. The IG does not care that you were working on it — they care about the paper trail. An aged open item in the discrepancy log is the item the IG flags first.
  • Signing a vault reconciliation you did not personally verify because the Cpl ran the count.
    At Sgt, your signature on the vault reconciliation certifies the count. If the Cpl's count was wrong and you signed it without checking, the discrepancy report that results from the next audit has your signature at the top of the chain of custody record. Verify before you sign — not every time if the Cpl has established a reliable record, but regularly enough that your signature is a real attestation.
  • Staging the MPO stand-up without a documented pre-opening inspection.
    When the IG reviews the deployment package, the opening inspection record is the first document they look for — it establishes the initial accountability baseline from which every subsequent audit comparison runs. An MPO that opened without a documented inspection is an MPO with an unverified starting point. Build the opening inspection record before the first window opens, every deployment.
  • Providing a verbal unofficial resolution to a congressional inquiry.
    Congressional inquiries require formal, written, chain-documented responses through the S1 and the congressional liaison office. An oral assurance from the section chief — even an accurate, well-intentioned one — is not a response to the inquiry. The congressional liaison officer who does not receive a formal response elevates the inquiry. The formal response the S1 eventually submits is now written under deadline pressure by someone who does not know the postal records as well as you do.
  • Writing a FitRep that inflates a Cpl who is not performing.
    The next command inherits your evaluation of the Cpl's capability. When the Cpl cannot run the window alone on the first field deployment and the next postal officer goes back to the FitRep that said 'leads Marines with distinction,' your credibility as the section chief is what the next command is evaluating. Write honest FitRep inputs — they protect both the Marine (by identifying development areas) and you (by being defensible).

Career Decisions at This Rank

  • SSgt board timing — push for earliest eligibility versus wait to build the FitRep profile
    SSgt board eligibility runs through TIG, TIS, and FitRep profile minimums under MCO P1400.32D. The Sgt who pushes for earliest eligibility with a thin FitRep profile is the Sgt who gets looked at by the board and passed. The Sgt who waits one additional cycle to build a stronger FitRep profile goes in with a cleaner record and a better chance of selection. The honest math: a Sgt with two strong FitRep cycles and a Sergeants Course in-residence completion has a materially better board profile than a Sgt with one cycle and distance education PME. Talk to the section GySgt about your profile before the board cycle.
  • Instructor billet at the DoD Postal School or MOS school versus staying line
    Instructor billets at the DoD Postal School in Norman, Oklahoma, or at a Marine Corps administrative training facility are visible career signals at the Sgt/SSgt rank. An instructor tour adds diversity to the FitRep record, builds the MOS community knowledge, and is a different kind of professional development than running a deployed MPO. The trade-off is operational experience time — an instructor tour replaces a deployment cycle. If the FitRep record is strong and the section GySgt recommends the billet, it is worth pursuing. If the deployment record is thin, one more deployment tour first is the honest recommendation.
  • Troop leadership path (1stSgt) versus occupational SME path (MSgt) — start thinking about it now
    The 1stSgt/SgtMaj versus MSgt/MGySgt career split is a formal decision that does not come until the GySgt-to-E8 board, but the trajectory that feeds each path is visible at the Sgt rank. Marines who want the 1stSgt path need diverse unit assignments, company-level visibility, and a FitRep record that shows leadership of Marines beyond the postal section. Marines who want the MSgt path need deep technical expertise, MOS program advising experience, and a FitRep record that shows domain authority. Neither is better — but they require different assignments and different career management decisions starting at the Sgt rank. Have the honest conversation with the section GySgt about which path fits what you are actually good at.
  • Re-enlistment versus separation — build the career or transition to USPS or federal service
    Sgt EAS transition into USPS federal service is the most direct civilian career path from the 0141 skill set — the military postal experience qualifies for USPS career track positions, and military veterans receive federal preference points in the USPS hiring process. DoD civilian workforce positions in administrative and logistics support also value the accountability documentation and chain-of-custody experience directly. The honest read: a Sgt EAS with a deployment package and a section chief record is a stronger candidate for USPS or federal civilian positions than a Cpl EAS. If the career in the Corps is not what you want for the next ten years, transitioning at Sgt with a complete record is the right time.

How the Seat Varies by Unit Type

  • Installation postal section — major Marine Corps base
    The section chief at a major installation manages higher volume, more complex coordination with the installation postal officer, and a larger staff. The accountability program is more formal — annual audits are more elaborately documented, official mail distribution involves MARADMIN and higher command coordination. The installation-level section chief develops the administrative depth that the senior boards value.
  • Deployed battalion-level MPO — MEU or forward-deployed package
    The section chief in a deployed MPO is the entire postal program for the battalion. No installation infrastructure, no in-building backup. The stand-up package, the opening inspection, and the accountability records all depend on the section chief's preparation and discipline. This is the formative operational experience that separates a technically competent Sgt from a deployable section chief.
  • Regimental or division-level postal coordination
    Some Sgt postal positions are at the regimental or division level, coordinating postal support across multiple battalion-level sections. This billet has a broader advisory role — the section chief is not running a single MPO but overseeing the accountability standards for multiple subordinate sections. A Sgt at this level is doing work that approaches the GySgt's advisory function, which is good visibility for the SSgt board.
  • Marine Corps Recruit Depot — postal support for the recruit training pipeline
    Postal support at MCRD is a different operational environment — high volume of family mail for recruits, specific mail handling procedures for the recruit training population (not all mail delivered directly during certain training phases), and coordination with drill instructor staff on distribution. A billet that builds volume and procedural discipline quickly.

What Good Looks Like at This Rank

The good postal Sgt is the SNCO the battalion S1 requests by name for the deployment package. Not because he has the best relationship with the S1, but because when the MPO stands up in 48 hours, the window opens on schedule, the opening inspection documentation is complete, and the postal officer's first accountability brief is on his desk before he asks. The congressional inquiry that arrived two days into the deployment was met with a formal, documented, chain-routed response because the section chief had the paper trail built from day one. His Cpls are Corporals Course graduates running independent sections. The section's NAVMC 3500.33 collective task evaluation passed clean. The annual money order accountability audit came back without a finding. The FitRep inputs he wrote on his Cpls were specific, standards-based, and defensible — the postal officer signed them without editing because they described what he observed. The Cpls' composite scores are building the way they should because the section chief wrote accurate Pro/Con marks from month one. The SSgt board conversation is happening because the FitRep record is clean, the Sergeants Course is behind him, and the composite score is what it needs to be. The section GySgt has already told the postal officer that this Sgt is ready for the SSgt board, and the postal officer agrees because he has seen the section run without drama for eighteen months.

Preview — The Next Rank

SSgt (E-6) in the postal community is the installation-level section chief or the senior SNCO for a deployed postal operation. The shift from Sgt to SSgt is a shift from running a section to building the section — developing multiple Sgts who can deploy independently, managing the full installation accountability cycle, and advising the postal officer on every operational decision he makes. The FitRep responsibility at SSgt grows: three to four FitReps per cycle on Sgts, with relative value decisions that feed the Sgt-to-SSgt board for your Marines. The SNCO who writes honest, defensible FitRep relative values is the SNCO the postal officer and the reviewing official trust. The SNCO who inflates his entire section to high relative value has a peer group problem — relative value is comparative, and the board reads the whole group. The GySgt board is the target that the SSgt's career management starts working toward from day one at the SSgt rank. Career Course completion is the gate. FitRep profile above the peer group median is the primary selection input. The SSgt who manages both proactively — pulling the Career Course slot early, tracking the FitRep relative value against the MOS peer group, stacking the composite score feeders — is the SSgt the GySgt is briefing the postal officer about when the GySgt board cycle opens.
FAQ

0141 E5 — Frequently Asked Questions

Q01What does a E5 0141 (Postal Clerk) actually do?
At Sgt you are likely running the installation or unit postal section as the senior enlisted Marine — managing the clerks, owning the accountability records, advising the postal officer, and standing up or collapsing the MPO around deployment cycles.
Q02What's the most important thing to know as a E5 0141?
Sgt postal chiefs run small sections with large accountability — a battalion's mail is your program, not your supervisor's.
Q03What does a typical day look like for a E5 0141?
Time-blocked day at the E5 0141 rank tier: 0500 Wake. Phone check — any overnight issues with section Marines. PT uniform on, 0530 PT formation. Accountability reported through the chain. Section Marine status confirmed, 0545–0700 Unit PT. 1st-Class standards maintained — you run at the front, your section watches. No exceptions for operational busyness, 0700–0830 Hygiene, chow, utilities. Pre-section opening: Cpls instructed on day's priorities, distribution schedule confirmed, any special handling noted, 0830 Morning formation. Tasking confirmed.…
Q04What mistakes get E5 0141 soldiers fired or relieved?
Verbal resolution of a congressional inquiry without a formal documented response through the chain. The congressional liaison office requires written documentation; an oral assurance from the section chief is not a response; Signing the vault reconciliation for a Cpl who ran the count without a supervisory check. Your signature certifies the count; if the Cpl's count was wrong, the discrepancy report has your name at the top;…
Q05What career decisions matter most at the E5 0141 rank tier?
SSgt board timing — push for earliest eligibility versus wait to build the FitRep profile — SSgt board eligibility runs through TIG, TIS, and FitRep profile minimums under MCO P1400.32D. The Sgt who pushes for earliest eligibility with a thin FitRep profile is the Sgt who gets looked at by the board and passed. The Sgt who waits one additional cycle to build a stronger FitRep profile goes in with a cleaner record and a better chance of selection.…
Q06What's next after E5 for a 0141 (Postal Clerk) in the Marines?
SSgt (E-6) in the postal community is the installation-level section chief or the senior SNCO for a deployed postal operation.
Q07What manuals and regulations does a E5 0141 need to know cold?
DoD 4525.6-M — Department of Defense Postal Manual (your primary governing document; the audit procedures, money order accountability rules, and discrepancy reporting chapters are yours to own).; MCO P1000.9 — Marine Corps Postal Regulations (the Corps implementation — know every chapter before the postal officer has to point to it).; USPS Publication 38 — Postal Operations Manual for overseas/military post offices (APO procedures, customs, and official mail distribution are all here).

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Published by the Honest MOS Editorial DeskVerified against DoD/.gov sourcesUpdated May 2026Editorial standards