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0671E1-E3

Data Systems Administrator

E-1 to E-3 (Junior Enlisted) · Marines

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

Active Directory and GCSS-MC are the two systems where a junior 0671 mistake travels furthest the fastest. A misconfigured group policy propagates to every workstation in the OU before the section chief finishes his morning coffee. A failed GCSS-MC replication job posts stale logistics data to the S4's review without anyone seeing it fail. The discipline at this tier is: check before you commit, document before you close, and report what you find before the section chief asks.

The Honest MOS Read
You arrive at your communications unit from MCCES Twentynine Palms with classroom knowledge of Windows Server, Active Directory, Group Policy, SQL Server basics, and the GCSS-MC application stack — the Marine Corps' enterprise resource planning system for logistics and supply. What you do not have yet is the operational context for why each of those systems matters and what happens downstream when they fail. The section chief will give you some of that context in the first week. The rest you will earn by watching what the S4 does when the supply data is wrong. The first six months are a sustained correction of the gap between school knowledge and operational knowledge. Windows Server administration in a production environment is different from Windows Server administration on a training VM. Active Directory in a battalion domain has dependencies — service accounts, group policy objects, shared mailboxes, application service accounts — that did not exist in the school environment, and disabling the wrong account breaks something you did not know existed. The junior 0671 who learns to check every account's dependencies before touching it is the one who does not bring down the battalion's SharePoint portal by disabling a service account. In garrison the work is a mix of technical tasks and the unglamorous labor that holds any Marine unit together. You will apply patches to production servers (with an approved change-management request, not on a whim), manage user accounts in Active Directory, check SQL Server database job history, administer SharePoint site permissions, monitor server hardware health through the Windows Event Viewer and RAID controller logs, and pull your share of working parties — armory guard, barracks duty, motor pool. The working parties are not a punishment. They are how you learn the installation and the people in it. GCSS-MC is the system that makes the S4's logistics world function. On the server side, GCSS-MC is a database application with a replication architecture that synchronizes logistics data across echelons. When the replication job fails — when the SQL Server Agent job that pushes data between tiers does not complete — the S4 is briefing stale supply data to the battalion S3 and nobody knows it until someone runs the count. Your job at the junior tier is to check the SQL Server job history before the end of every shift, escalate failed replication or backup jobs to the section chief before the 24-hour window closes, and document what you found and what you did in the maintenance log. DISA STIGs are the configuration baseline for every server on the Marine Corps Enterprise Network. The ACAS scanner runs against your server builds automatically. Every open CAT I (Critical) finding on a server you are responsible for is a named deficiency that requires a signed POA&M and a remediation deadline. At the junior tier you will not be writing the POA&M — that is the Cpl's job — but you will be generating the findings or not generating them, depending on whether you ran the STIG checklist before you connected the server to the MCEN. The fitness standard is operationally real. The data center is not an excuse. The junior 0671 who cannot make 1st-Class PFT is the junior 0671 who cannot carry server hardware in a field deployment kit, and those two things are connected in a Marine corps communications unit in ways they are not in a civilian IT environment. Your identity at this tier is built on documentation and accuracy. The maintenance log that is updated before you leave the building, the trouble ticket that is verified with the user before it is closed, the patch application that is documented in the patch log before the server is returned to service — these are the artifacts that tell the section chief what kind of data systems tech you are. Build the documentation habit from day one. Everything else at this rank follows from that.
Career Arc
  • 01Arrive at unit from MCCES Twentynine Palms — section chief assesses your Windows Server and SQL Server baseline in the first two weeks.
  • 02First production server task under supervision: apply a patch cycle, verify installation, document completion in the patch log.
  • 03Earn unsupervised Active Directory account management rights after the section chief signs the CARP on your first individual task evaluation.
  • 04Run a server health check independently — event viewer, disk SMART status, RAID logs, backup job history — and document results in the maintenance log with no section chief prompting.
  • 05LCpl: MCMAP Green Belt, first Corporals Course eligibility, section chief's name-recognition inside the battalion S6.
  • 06Corporals Course slate — cut orders before the section chief asks you to remind him.
Common Screwups
  • ×DUI or off-duty alcohol incident. One DUI at the junior enlisted tier closes the Corporals Course gate and opens separation paperwork — the security clearance adjudication alone can hold a sensitive-systems billet for a year or more.
  • ×OPSEC violation involving server hostnames, IP addresses, system architecture details, or application version information on social media or personal devices. The S2 runs sweeps and the ISSM is cc'd on the incident report. A formal OPSEC incident at the junior enlisted tier is a clearance-threatening event.
  • ×NJP for any reason. An Article 15 at the junior enlisted tier puts the Corporals Course slate on hold and puts the composite score in a hole that takes 18 months of clean conduct marks to climb out of.
  • ×Falsifying a maintenance log or closing a trouble ticket as resolved before verifying the fix with the user. A 'resolved' GCSS-MC replication ticket that re-opens six hours later because nobody ran a test replication cycle is an integrity problem, not a technical problem — and the section chief treats it accordingly.
  • ×Financial mismanagement that requires command intervention. Predatory lenders near the gate are a predictable hazard; a garnishment routed through the command financial specialist to the 1stSgt is a name-recognition outcome that follows the junior Marine to the next unit.

A Day in the Life

  • 0500Wake. Check the section group chat for overnight messages — any server alerts, any replication failures, any duty tech issue from overnight. None? PT uniform on.
  • 0530PT formation. The section forms with the communications company or platoon. Your Cpl takes accountability and reports up. Missing Marine is a call made before formation.
  • 0545-0700Unit PT — cardio days, strength days, ruck days, same as every Marine in the communications company. The data center does not exempt you from the hump schedule.
  • 0700-0830Hygiene, chow, change into utilities. Before morning formation: pull the SQL Server Agent job history from last night — any failed replication or backup jobs are escalations that go to the section chief before morning formation, not after.
  • 0830Morning formation. The section chief gives the day's work assignments. You confirm your task — account audit, patch cycle, server health check, SharePoint administration, field op kit prep — and any access or materials you need to draw.
  • 0900-1130Work period. In garrison: account management, patch application with approved change requests, SQL Server monitoring, SharePoint site administration, ACAS remediation support, maintenance log entries, and whatever the section chief queued on the work order. Document as you work — not after.
  • 1130-1300Chow. Sit with peer junior enlisted. The chow hall seating pattern is a social structure — junior Marines with junior Marines, NCOs with NCOs.
  • 1300-1500Afternoon work period. Continue the morning task or start the afternoon tasking. NAVMC 3500.44 individual task training when the section chief has scheduled it — your Cpl evaluates you against the task standard while you execute.
  • 1500-1600Final formation. Section chief gives tomorrow's schedule. Sensitive items accountability — NVGs, crypto fill devices — accounted for and secured. Server health check final round for the day — event log review, backup job confirmation — before locking the server room.
  • 1600-1630Liberty call if the section is on garrison schedule. Field op prep, range coverage, and duty break this.
  • 1700-2000Personal time. Study for CompTIA Security+ or the Microsoft certification relevant to your Windows Server work if you are on the certification track. MCMAP mat time for the Green Belt progression. The gap between school knowledge and operational knowledge closes fastest for the junior tech who studies in the evening, not the one who waits for the section chief to schedule training.
  • 2000-2200Downtime or study. If the section's duty tech calls with a server alarm, you are the backup resource the section chief may contact. The junior Marine who picks up the phone and knows the escalation procedure is the one who earns more independence next quarter.
  • 2200Lights out.
  • Field op / forward command post deploymentServer kit loaded to the pre-departure checklist. At the forward site: server rack mounted, OS builds verified against the field build checklist, GCSS-MC replication configured and tested before the first S4 review. The section chief signs off on the deployment after reviewing the build checklist — not before.

Weekly Cadence

The garrison week for a junior 0671 runs on the section chief's work order and the unit training schedule. Monday is the assessment day — SQL Server job history from the weekend automated runs is reviewed before the morning update brief, any ACAS findings from the weekend scan are triaged, and the week's patch cycle, account audit, and field op prep tasks are confirmed against the section chief's priorities. Tuesday through Thursday is the execution rhythm. Server patching against the approved maintenance schedule, Active Directory account audits, SharePoint administration, SQL Server monitoring and GCSS-MC replication checks, and NAVMC 3500.44 individual task training when the section chief schedules it. Every task is documented in the maintenance log or trouble-ticket system before it is considered complete. Friday is cleanup: close the week's trouble tickets with verification, update the system inventory documentation if anything changed, confirm the weekend duty roster, and run the server health check round before liberty call. The week changes significantly during field op preparation cycles. When the battalion is spinning up for an exercise or a deployment workup, the garrison work order disappears and kit staging, build checklist preparation, and pre-departure inventory take over. The two weeks before a field op are the two weeks when the junior tech who has been maintaining the maintenance log consistently has an easy pre-departure checklist — because the equipment status is current — and the one who has been behind on the maintenance cycle has to run a 72-hour marathon to catch up.

Key Skills — How to Drill Each

  1. 01
    Create, modify, and disable Active Directory user accounts and group memberships following the unit's access-control SOP — no orphaned accounts, no accounts left active after PCS or EAS.
    Before you touch any account, run a check of its group memberships, shared mailbox delegations, and application service account dependencies. Active Directory Users and Computers shows you the direct group memberships; the deeper dependency check (what services this account runs, what shared resources it owns) requires a conversation with the section chief or a review of the unit's access-control documentation. Disable an account only after you have confirmed the dependencies are either migrated or the owning application has been notified. Document the check in the trouble ticket before you close it.
  2. 02
    Apply Windows Server patches through the unit-approved patch management process, verify successful installation, and document completion in the patch log.
    The unit-approved process exists because patching a production server without a change-management approval and a rollback plan is a risk-management failure, not a technical success. Before you touch a production server: the change request is approved, the patch is tested in the unit's staging environment if one exists, a rollback procedure is documented, and a maintenance window has been coordinated with the S6 or the section chief. After patching: verify the patch installation through Windows Update history, verify the services that were running before the patch are still running after the reboot, document completion in the patch log with the patch KB number and installation timestamp.
  3. 03
    Check SQL Server database job status, review the error log for failed jobs, and escalate failed replication or backup jobs to the section chief before the 24-hour window closes.
    SQL Server Agent job history in SQL Server Management Studio is your daily operational check. Every morning, before the section chief's first check-in, pull the job history for the previous 24 hours and look for failed or incomplete jobs — specifically GCSS-MC replication jobs and backup jobs. A failed replication job means the S4's logistics data may be stale; a failed backup job means the section's recovery point objective has moved. Both are escalate-immediately findings. Document what you found, when you found it, and when you escalated it.
  4. 04
    Administer a SharePoint site collection — permissions, site creation, document library management — to the standard the S-6 uses for command information portals.
    SharePoint administration at the junior tier is permissions management and structural administration — not development. Learn the unit's site collection architecture: which sites belong to which commands, how the S6 structures document libraries, what permission levels exist and who owns each group. Before you change any permission, verify the change with the site owner. A permission change that locks out a colonel's document library is a support ticket that goes directly to the section chief — and the junior tech who made the change without verification writes the incident report.
  5. 05
    Run a server hardware health check — event viewer, disk SMART status, RAID controller logs, backup job history, UPS runtime — and document the results in the maintenance log.
    The server health check is a daily habit, not a weekly event. Windows Event Viewer application and system logs for hardware warnings and errors. Disk SMART status from the RAID controller management utility — any predictive failure warnings are immediate escalations. RAID controller logs for rebuild status if a drive was recently replaced. Backup job history for the previous 24 hours. UPS battery health and runtime estimate. Document every check in the maintenance log with the check result, the timestamp, and your name. The maintenance log that has daily entries from every tech in the section is the maintenance log the TMDE inspector reads as evidence that the gear was cared for.
  6. 06
    Perform operator-level preventive maintenance on servers, storage arrays, and UPS units and complete the maintenance log before returning gear to the server room.
    Preventive maintenance on server hardware is unglamorous and skipped at exactly the moment it matters most — when the field op is approaching and the PM cycle is behind schedule. Clean the dust filters on servers and storage arrays quarterly. Check UPS battery health biannually at minimum. Verify SFP modules are seated on any network-connected server ports. Read the storage array's management console for drive health and RAID rebuild status. Document completion in the maintenance log before the gear goes back into the rack. The section that skips PM cycles is the section that discovers a failed drive at a forward command post during a field op.

Manuals & References — What Chapters Matter

  • NAVMC 3500.44 — Communications Training and Readiness Manual
    This is the T&R Manual for the 06-series community and the source of every individual and collective task you are evaluated against at the company level. At the junior tier your focus is the 1000-level individual tasks for 0671: server health check, account management, patch application, SQL Server job monitoring, GCSS-MC replication verification. Pull the chapter on 0671 individual tasks and walk it with your section chief in the first week — it tells you exactly what 'task complete' looks like to the evaluator.
  • DISA STIGs — Security Technical Implementation Guides
    Every server you build, every SQL Server instance you provision, every Windows system you configure is audited against its DISA STIG by the ACAS scanner. Bookmark the DISA STIG Viewer and learn to navigate the relevant checklists for Windows Server and SQL Server. The time to read the STIG is before you build the system, not after the ACAS scan returns 50 findings. A CAT I finding on a server you configured is a named deficiency in the section's POA&M with your name in the remediation history.
  • DoDD 8500.01 — Cybersecurity
    The DoD-level policy directive that defines why the ISSM has authority over your server environment and why patch compliance is not optional. You do not need to memorize it — you need to understand the framework: Authorizing Officials, Information Owners, the accountability chain that terminates at your section chief if something goes wrong on your server. The junior 0671 who understands why the ISSM can direct a server to be taken offline does not resist the ISSM's direction.
  • MCO P2000.11 — Marine Corps COMSEC Policy
    PKI certificates and cryptographic material that ride the server infrastructure are part of the COMSEC posture — and the junior data systems tech is responsible for the server-side certificate management even if the COMSEC custodian manages the physical keying material. Read the sections on PKI certificate handling and system-level cryptographic material. A certificate that expires on a production server because nobody tracked the renewal date is a COMSEC posture failure that the section chief explains to the S6.
  • MCO 6100.13 — Marine Corps Physical Fitness, Body Composition, and Military Appearance
    The fitness standard is operationally real for 0671 Marines. Server hardware is heavy. Forward command post server deployment kits require physical labor. The junior data systems tech who cannot make 1st-Class PFT is the one who becomes the liability during a field deployment kit load-out — and the section chief does not separate technical competence from physical standards.

Standards — How to Hit Each

  • 1st-Class PFT and CFT — the server room does not excuse you from the fitness standard; the platoon runs the same schedule you do.
    Build a structured PT plan around the PFT events — pull-ups, crunches, three-mile run — with weekly volume targets and a monthly mock-test to track progress. The CFT load-bearing events require specific conditioning. A 1st-Class PFT does not happen accidentally; it is the result of consistent work between the scheduled unit PT events. The junior tech who supplements unit PT with personal PT during the week is the one who is consistently at 1st-Class — not the one who is scrambling to pass in the week before the scheduled test.
  • Annual Rifle Qualification: Expert is the floor. Every 0671 is a Marine first.
    Dry fire 50 reps per week between annual qualification cycles. The muscle memory for trigger control and sight alignment does not maintain itself between annual range events. Expert is the standard — the junior Marine who qualifies Sharpshooter explains it to the platoon sergeant and carries the result in the composite score. Identify the failure point — position, trigger control, sight picture, breathing — and address it with the section's senior qualified shooter before the next qualification cycle.
  • Zero open CAT I STIG findings on any server build you are responsible for at inspection time — one Critical finding delays mission authorization.
    Run the STIG checklist on every server before you connect it to the MCEN. Build a personal STIG checklist for each server type you work — Windows Server, SQL Server, any application platform the section deploys — and walk through it item by item before the server goes live. The server that passes the ACAS scan on first inspection is the server configured by a Marine who did the checklist before it was connected to the network. The one that returns 40 findings on first scan is the one that did not.
  • MCMAP Gray Belt before LCpl; Green Belt before you sit a Corporals Course board.
    Schedule the Gray Belt tape within the first 90 days of arriving at the unit. Ask the section's senior MCMAP instructor — the senior Marine in the section who holds instructor certification — to put you on the training schedule. Green Belt requires more mat hours and a more senior instructor signature; start the Green Belt progression at the six-month mark so it lands before your Cpl board eligibility window. The MCMAP belt progression feeds the composite score under MCO 1400.32 — every belt is a concrete input.
  • Pass the NAVMC 3500.44 individual data systems tasks at the company-level evaluation — account management, server health check, patch application — without re-runs.
    Practice to the actual task standard listed in the T&R Manual, not to the general activity. The evaluator is grading whether you execute the task to the specific standard the T&R Manual defines — including the documentation step, the verification step, and the escalation step for anomalies. Run the task dry with the Cpl watching before the evaluation. If you fail in practice, identify the specific failure point, fix it, and run it again before the evaluation. Passing on first evaluation tells the section chief you are ready for unsupervised execution.

Technical Mistakes — Concrete Consequences

  • Disabling an Active Directory account without checking group memberships and shared mailboxes first.
    A service account that powers the battalion's SharePoint portal — disabled because the Marine it was named after left on PCS and nobody checked the account's purpose — takes the portal offline. The CO finds out when he cannot access the command information site the morning of the O-call briefing. The section chief finds out from the S6 before he finds out from you. The discovery conversation with the section chief includes the question: 'Did you check the dependencies before you disabled it?' The maintenance log entry from the day of the disable is the evidence of whether you did or did not.
  • Applying a Windows patch to a production server during business hours without a change-management approval and a tested rollback plan.
    A patch reboot that takes a file server offline during the workday — while the S4 is running a supply review and the battalion clerk is updating personnel records — is a section-chief conversation that the S6 is also part of. The change-management process requires a maintenance window coordinated with users, an approved change request, and a documented rollback procedure. The junior tech who patches without approval creates a service disruption with no paper trail to support why the change was necessary.
  • Leaving the default SQL Server sa account enabled with a weak password after a new instance build.
    The ACAS scan runs automatically on new hosts connected to the MCEN. A SQL Server instance with the default sa account enabled and a weak password returns a CAT I finding the night of the build. The ISSM reads the output the next morning and sends it to the S6 with the finding highlighted. The section chief's response to the S6 includes the question of when the server was connected to the MCEN and whether the STIG checklist was run before connection. The answer is in the build log — or is not, which is worse.
  • Closing a trouble ticket as 'resolved' before verifying the fix with the user.
    A GCSS-MC replication ticket marked resolved that the S4 reopens six hours later because the logistics data is still stale — because nobody ran a test replication cycle after the fix — is an integrity problem. The trouble-ticket metrics show a resolution and a re-open within six hours. The section chief reads that pattern as a junior Marine who is managing the metric rather than the problem. The verification call to the user before closing the ticket costs two minutes and eliminates the pattern entirely.
  • Posting any information about server hostnames, IP addresses, application versions, or system architecture on social media or personal devices.
    The S2 runs sweeps of social media platforms for unit-relevant content. FOUO system information — hostnames, IP ranges, application stacks, version information — posted on social media is an OPSEC incident. The incident report goes to the commanding officer and the ISSM. A junior Marine's clearance adjudication does not survive a formal OPSEC investigation well, and a 0671 without a clearance is a 0671 who cannot do the job.

Career Decisions at This Rank

  • Pursue Microsoft or CompTIA certification now or wait for the unit to sponsor it?
    CompTIA Security+ is DoD 8570.01-M baseline certification relevant to the IA work embedded in 0671 responsibilities, and the Marine Corps has certification funding programs that cover the exam fee — ask the section chief and the S6 about the unit's certification sponsorship program. Microsoft certifications (the Azure or Windows Server tracks) are not DoD-mandated but add direct civilian market value to the Windows Server skills you are building daily. The honest timing at the junior enlisted tier: studying for Security+ while at Pvt-to-LCpl tier gets you the DoD 8570 certification and signals to the section chief that you are investing in the MOS. The Marine Corps college credits that some certification pathways generate also feed the composite score under MCO 1400.32. Start with Security+ while the MOS school knowledge is fresh.
  • Stay 0671 through first reenlistment or evaluate lateral move options early?
    The 0671 MOS has a clear career ladder — Cpl data systems NCO, Sgt section chief, SSgt platoon sergeant, GySgt data systems chief — with a post-service market in cleared enterprise IT, GCSS-MC administrator roles, and Windows Server administration that is genuinely competitive. At the junior enlisted tier the honest advice is to invest fully in the current MOS and defer the lateral move conversation to the Cpl-to-Sgt window, when you have enough operational experience to make an informed decision. The section chief can see the difference between a junior Marine who is learning the MOS and one who is already planning an exit.
  • Reenlist versus ETS at first contract expiration?
    First contract is typically four years. At LCpl-to-Cpl the reenlistment decision is 18-24 months away. The civilian IT market for a junior cleared data systems admin — Windows Server, Active Directory, SQL basics, GCSS-MC experience, Security+ certification — is competitive at entry level in the DC metro, Tidewater, and San Diego markets. The reenlistment math: the SRB for 0671 varies year over year (pull the current MARADMIN); the Sgt board is a genuine possibility for a high-composite Cpl within 18-24 months of reenlistment; the long-term 0671 career arc leads to a post-service cleared enterprise IT or DoD civilian role with a significantly deeper operational resume than a Cpl ETS. Marines who ETS at first contract with Cpl rank, a clean record, and a Security+ certification are competitive in the civilian market. Marines who reenlist to Sgt and beyond are building toward a cleared contractor or GS civilian role with a deeper profile.

How the Seat Varies by Unit Type

  • Communications battalion or communications company (garrison-heavy unit)
    Most junior 0671 billets land in communications companies attached to infantry regiments or divisions, or in communications battalions. Garrison-heavy units run a more structured T&R calendar — individual task evaluations on schedule, section training days, NAVMC 3500.44 sign-offs documented. The field exercise cycle is predictable. The junior 0671 in a garrison-heavy communications unit learns the technical baseline more methodically but may go six to twelve months between field operations. The section chief's proximity to the junior Marine is higher in garrison — which means feedback is more frequent and visible.
  • MEU communications element (afloat cycle)
    The MEU communications element deploys with the BLT on amphibious shipping for six to seven months. Junior 0671s assigned to a MEU communications element deploy afloat, manage server infrastructure in shipboard spaces not designed for enterprise IT, and operate at the MEU S6's operational tempo. GCSS-MC logistics data integrity is more immediately visible on a MEU deployment because the BLT's supply chain is operating in a forward-deployed context with less margin for data errors. Afloat tours are career-accelerating for junior 0671s who are technically and physically ready.
  • Higher-echelon MEF support element (MEF G6 section)
    Higher-echelon MEF communications elements operate on a larger enterprise network with more server nodes, more Active Directory complexity, and more demanding ISSM requirements. Junior 0671s at the MEF level work alongside SSgts, GySgts, and senior technical contractors on an enterprise environment that spans more scope than a battalion deployment. The learning curve is steeper and the senior mentorship access is greater. MEF-level assignments as a junior Marine are less common than regimental or battalion assignments but produce technically broader junior NCOs.

What Good Looks Like at This Rank

The good junior 0671 is the Marine the section chief sends to build and patch a server in the forward command post and trusts to come back with a documented build checklist, zero CAT I STIG findings on the first ACAS scan, and every service running before the first staff brief. He ran the STIG checklist before the server was connected to the MCEN — not after the scan ran. The maintenance log has a dated entry for every health check he ran, and the entry is specific enough that the next tech can read it and know what was checked, what was found, and what was done. The section chief stops prompting him for the daily SQL Server job history check by month three because it appears in the team's morning status report before the section chief reads it. When a replication job fails overnight, the section chief finds out before his first coffee because the junior tech escalated it via the section group chat at 0600 — not because the S4 called to ask why his logistics data was stale. The Cpl board conversation happens because the section chief initiated it, not because the junior tech asked. That only happens when the section chief already has the Marine's name on his recommendation. The name gets there through six to twelve months of accurate, documented, self-initiated technical work — the maintenance log that updates itself, the trouble tickets that close with verification, the STIG checklists that run before the ACAS scanner does. Build that reputation and the Corporals Course slot appears. Wait to be told what to do next and the slot goes to the tech who did not wait.

Preview — The Next Rank

Cpl is the Data Systems NCO rank — the jump from executing under supervision to owning a team's output. The section chief stops running every GCSS-MC replication check himself and sends you to run the daily SQL Server monitoring cycle with your two junior techs. The ACAS findings on your section's servers are your findings to triage and brief. You write proficiency and conduct marks on each junior Marine, and the Corporals Course curriculum adds the formal leadership layer on top of the technical foundation you built at the junior enlisted tier. The Cpl's technical credibility is the section chief's assumption — he expects you to patch a server correctly, manage an Active Directory OU cleanly, and diagnose a GCSS-MC replication failure without a walkthrough. What he is watching at the Cpl tier is whether you can translate technical competence into team output. Can you brief a server build task to your team and trust them to execute it? Can you run a post-incident AAR honestly — naming the failure point and the fix — without turning it into a blame session? Can you write a proficiency mark that is specific enough to mean something? The Sgt board for 0671 runs through composite scores and cutting scores under MCO P1400.32. Start tracking your composite score monthly from the moment you pin Cpl. Every 1st-Class PFT, every MCMAP belt, every college credit through Tuition Assistance, every award packet — these feed the composite. The Cpl who pins Sgt on timeline started tracking the math at LCpl.
FAQ

0671 E1-E3 — Frequently Asked Questions

Q01What does a E1-E3 0671 (Data Systems Administrator) actually do?
You arrive at your communications unit from MCCES Twentynine Palms with classroom knowledge of Windows Server, Active Directory, and the GCSS-MC application stack that the section chief will either confirm or correct inside the first week.
Q02What's the most important thing to know as a E1-E3 0671?
Active Directory and GCSS-MC are the two systems where a junior 0671 mistake travels furthest the fastest.
Q03What does a typical day look like for a E1-E3 0671?
Time-blocked day at the E1-E3 0671 rank tier: 0500 Wake. Check the section group chat for overnight messages — any server alerts, any replication failures, any duty tech issue from overnight. None? PT uniform on, 0530 PT formation. The section forms with the communications company or platoon. Your Cpl takes accountability and reports up. Missing Marine is a call made before formation, 0545-0700 Unit PT — cardio days, strength days, ruck days, same as every Marine in the communications company. The data center does not exempt you from the hump schedule, 0700-0830 Hygiene, chow,…
Q04What mistakes get E1-E3 0671 soldiers fired or relieved?
DUI or off-duty alcohol incident. One DUI at the junior enlisted tier closes the Corporals Course gate and opens separation paperwork — the security clearance adjudication alone can hold a sensitive-systems billet for a year or more; OPSEC violation involving server hostnames, IP addresses, system architecture details, or application version information on social media or personal devices. The S2 runs sweeps and the ISSM is cc'd on the incident report.…
Q05What career decisions matter most at the E1-E3 0671 rank tier?
Pursue Microsoft or CompTIA certification now or wait for the unit to sponsor it? — CompTIA Security+ is DoD 8570.01-M baseline certification relevant to the IA work embedded in 0671 responsibilities, and the Marine Corps has certification funding programs that cover the exam fee — ask the section chief and the S6 about the unit's certification sponsorship program. Microsoft certifications (the Azure or Windows Server tracks) are not DoD-mandated but add direct civilian market value to the Windows Server skills you are building daily.…
Q06What's next after E1-E3 for a 0671 (Data Systems Administrator) in the Marines?
Cpl is the Data Systems NCO rank — the jump from executing under supervision to owning a team's output.
Q07What manuals and regulations does a E1-E3 0671 need to know cold?
NAVMC 3500.44 — Communications Training and Readiness Manual (the individual and collective tasks for 06-series data systems admins you are evaluated against).; DISA STIGs — the mandatory configuration baseline for every server, database, and application on the MCEN; your builds are audited against these.; DoDD 8500.01 — Cybersecurity (the DoD-level policy that defines the ISSM's authority over your server environment and why patch compliance is not optional).

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