Marine Corps MOS · Support
8157 Career Detachment Commander
Overview
Career Detachment Commanders are experienced Marine Security Guard staff noncommissioned officers serving in long-term operational and managerial billets within the Marine Corps Embassy Security Group. Assignments include detachment command at diplomatic posts, Department of State liaison, MSG school instruction, and operations, training, screening, and assignment management.
Core Skills
- Embassy security detachment leadership
- Marine Security Guard training and readiness oversight
- Screening and assignment management
- Department of State liaison support
Notes & Sources
- Civilian career paths and credential recommendations are not inferred from the MOS title or a COOL mapping alone. This page publishes the duties supported by the official manual.
- The manual accepts an active or previously active adjudicated Top Secret clearance with SCI eligibility as an applicant prerequisite.
Evidence for this guidance (1 document)
- NAVMC 1200.1M (FY27): MOS 8157, Career Detachment Commander
[1] Chapter 3, OccFld 81, MOS 8157; printed pp. 3-486 to 3-487; PDF pp. 904-905; cached text lines 55740-55822; primary PDF cached 2026-08-03, reviewed 2026-10-03
Supports: Embassy security detachment leadership, Marine Security Guard training and readiness oversight, Screening and assignment management, Department of State liaison support
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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