• USMC | Marine Security Augmentation Unit #559496780

members (measured 23 Oct 2026, 17:29 UTC)

10 October 2025

created (per Roblox API)

13 August 2026

first measured by this register

Membership history

Growth

Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
25 Aug 2026, 00:52	2	first reading

Ownership

Owned by @AUSMHOLD as measured.

Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.

Members we’ve seen

@AUSMHOLD — [HOLDER] (rank 255)

Wil (@Wilzyg) — [CENTCOM] Central Command (rank 254)

A sample — only members this register has independently measured, highest rank first. Not the full roster.

Rank structure

[HOLDER]1

[CENTCOM] Central Command1

[MS] Marine Staff0

[SECFA] Secretary of Foreign Affairs0

[DEPSFA] Deputy Secretary of Foreign Affairs0

[ASECFA] Assistant Secretary of Foreign Affairs0

[D] Director of Security0

[DD] Deputy Director0

[S] Supervisor0

[RCO] Regimental Commanding Officer0

[RXO] Regimental Executive Officer0

[OC] Operations Chief0

[UCO] Unit Commanding Officer0

[UXO] Unit Executive Officer0

[UO] Unit Officer0

[JUO] Junior Unit Officer0

[SMSG] Senior Marine Security Guard0

[MSG] Marine Security Guard0

[JMSG] Junior Marine Security Guard0

[MSI:PIII] Marine Security Intern Phase III0

[MSI:PII] Marine Security Intern Phase II0

[MSI:PI] Marine Security Guard Phase I0

Member2

Guest0

Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).

Related groups

Groups whose measured members overlap with this one — a sample from our membership graph.

• The United States Marine Corps#122401802 · 2 shared members

[:] Navy Officer Candidate School#260824957 · 2 shared members

[:] Naval Judge Advocate General's Corps#424596338 · 2 shared members

[:.] Fleet Forces Command#1110739643 · 2 shared members

[:] Naval Foreign Affairs#1081869460 · 2 shared members

[:] Navy Exchange#33285219 · 2 shared members

[:] Naval Education and Training Command#32076424 · 2 shared members

[1] Department of Defense#52855327 · 2 shared members

[:] Office of the Naval Inspector General#536939201 · 2 shared members

[:] Naval Criminal Investigative Service#412000911 · 2 shared members

[:] Master-at-Arms#311971828 · 2 shared members

[:.] Naval Special Warfare Command#550466458 · 2 shared members

Open data

Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)

Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.