Is 0631 (Network Administrator) a Good MOS?
United States Marine Corps · Military Occupational Specialty
Quick Facts — 0631 (Network Administrator)
AIT / Training
14 weeks
Training Location
MCCES, Twentynine Palms, CA
Career Field
Data Systems
Verdict: Not enough data
Based on 0 community reviews from verified service members
Score Breakdown
About 0631 Network Administrator
Installs, configures, operates, and maintains Marine Corps tactical and garrison data networks. Manages routers, switches, firewalls, and network infrastructure on classified and unclassified networks. Responsible for IP addressing, VLAN configuration, network monitoring, and troubleshooting connectivity across the MAGTF. This MOS was created when the old 0651 split — 0631s own the network infrastructure while 0671s own the systems and servers that ride on it.
14 weeks
MCCES, Twentynine Palms, CA
Data Systems
Recruiter vs. Reality
What the Recruiter Says
You'll build and maintain the network backbone that connects every Marine in the fight. Routers, switches, firewalls, tactical data links — you own the infrastructure that makes command and control possible. CCNA-level networking skills are in massive civilian demand, and the cleared network engineers the Marine Corps produces are exactly what defense contractors and enterprise IT shops are hiring. This used to be lumped together with systems administration under 0651 — now you get to specialize in what matters: the network itself.
What It's Actually Like
You are the plumber of Marine Corps IT — you own the pipes. Switches, routers, firewalls, cable runs, IP schemes, VLANs, and whatever tactical network gear the Corps is fielding this year. When the 0651 split happened, 31s got the network infrastructure and 71s got the servers and systems. In practice, especially in smaller units, you still end up doing some of both because there aren't enough bodies. In garrison, your life is managing network closets, running cable, configuring switches, and troubleshooting why building 4200 can't reach the print server. In the field, you're building tactical networks from scratch — setting up a COC's entire data backbone with military networking gear that is not Cisco no matter how much the recruiter implied it was. Training at MCCESS covers the fundamentals but you'll learn the real stuff on the job. Get your CCNA on your own time — the military courses don't go deep enough for the civilian market. The good news: networking is one of the most transferable military IT skills. Companies need people who can troubleshoot at the packet level under pressure, and that's exactly what deployed Marine network admins do every day.