mos.directory

Marine Corps MOS · IT & Cyber

0679 Systems and Infrastructure Chief

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

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Overview

Systems and Infrastructure Chiefs oversee the planning, installation, operation, maintenance, and secure integration of systems supporting command and control. Their responsibilities include directory services, identity and access management, cloud services, disaster recovery, virtualization, cybersecurity, budgeting, and training and documentation for administration credentialing.

Minimum clearance: Secret

Core Skills

  • Directory services and identity, credential, and access management
  • Virtualization and cloud services administration
  • Systems disaster recovery
  • Administration credentialing compliance training and documentation

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Network and Computer Systems Administrators

Responsibility for directory services, identity and access management, virtualization, cloud services, and disaster recovery directly overlaps civilian systems administration.

How to prepare: Build a small virtualized domain lab and document account administration, a scripted maintenance task, and a successful backup restoration.

What the civilian work involves
  • Maintain and administer computer networks and related computing environments, including computer hardware, systems software, applications software, and all configurations.
  • Perform data backups and disaster recovery operations.
  • Configure, monitor, and maintain email applications or virus protection software.
Civilian tools and software (examples)
  • Microsoft Active Directory
  • Microsoft Azure software
  • Bash

Business Continuity Planners

Military responsibility for disaster recovery and systems infrastructure provides a practical foundation for the IT recovery portion of business continuity planning.

How to prepare: Create a sample data-center recovery plan and run a tabletop exercise that tests recovery decisions, communications, and restoration of critical services.

What the civilian work involves
  • Test documented disaster recovery strategies and plans.
  • Develop disaster recovery plans for physical locations with critical assets, such as data centers.
  • Maintain and update organization information technology applications and network systems blueprints.
Civilian tools and software (examples)
  • Microsoft Office software
  • Microsoft SharePoint

Training & Development

Choose credentials for your target role. COOL funding markers describe program listings, not a guarantee of eligibility or funding.

Getting Started

  • CompTIA Network+ · Funded

    Validate networking, virtualization, cloud service, and network resilience knowledge relevant to systems administration.

    For: Network and Computer Systems Administrators

  • CompTIA Security+ · Funded

    Validate baseline security skills for securing enterprise systems and hybrid environments.

    For: Network and Computer Systems Administrators

Notes & Sources

  • The EL 105 requirement applies to lateral moves from non-06xx specialties and is waived for Marines promoted from an 067x feeder MOS.
Evidence for this guidance (6 documents)
  1. NAVMC 1200.1M (FY27): MOS 0679, Systems and Infrastructure Chief

    [1] Chapter 3, OccFld 06, MOS 0679; printed p. 3-76; PDF 494; cached text lines 30022-30100; primary PDF cached 2026-08-03, reviewed 2026-10-03

    Supports: Directory services and identity, credential, and access management, Virtualization and cloud services administration, Systems disaster recovery, Administration credentialing compliance training and documentation, Network and Computer Systems Administrators (O*NET 15-1244.00), Business Continuity Planners (O*NET 13-1199.04)

  2. O*NET: Network and Computer Systems Administrators

    [2] O*NET 30.3 occupational data

    Supports: Network and Computer Systems Administrators (O*NET 15-1244.00)

  3. O*NET: Business Continuity Planners

    [3] O*NET 30.3 occupational data

    Supports: Business Continuity Planners (O*NET 13-1199.04)

  4. COOL credential mapping: CompTIA Network+

    [4] 0679 cached COOL credential feed

    Supports: CompTIA Network+

    [5]CompTIA: Network+ (Plus) certification exam details · Exam details; retrieved 2026-09-23

    Supports: CompTIA Network+

  5. COOL credential mapping: CompTIA Security+

    [6] 0679 cached COOL credential feed

    Supports: CompTIA Security+

  6. CompTIA Security+ exam details

    [7] Exam details, recommended experience

    Supports: CompTIA Security+

Defense contractor jobs for 0679

Predecessor codes

Historical codes with documented links to 0679. Each history page explains the change.

0612Tactical Switching Operator (PMOS)0619Telecommunications Systems Chief (PMOS)0651Cyber Network Operator (PMOS)0659Cyber Network Systems Chief (PMOS)2823Technical Control Chief (PMOS)

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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