Uɴɪᴛᴇᴅ Sᴛᴀᴛᴇꜱ Mᴀʀɪɴᴇ Cᴏʀᴘs #5455156

members (measured 12 Oct 2026, 18:23 UTC)

4 January 2020

created (per Roblox API)

10 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 We do not publish numbers we have not measured.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
10 Aug 2026, 19:02	18	first reading

Ownership

Owned by @RossKorleone 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

@RossKorleone — [CJCS] Chairman of Joint Chief of Staff (rank 255)

@preuecb — [CMC] Commandant of the Marine Corps (rank 253)

StepBroSt0rm (@BroSt0rm) — [DEV] Developer (rank 251)

@KaitlynSt0rm — [DEV] Developer (rank 251)

@KyleTValentino — [E4] Corporal (rank 45)

@Cyzeko — [E2] Private First Class (rank 35)

@DaniellCruse — [E1] Private (rank 30)

Dagger (@col127331944) — [E1] Private (rank 30)

@Kleonymos — [E1] Private (rank 30) terminated

Gunner_Monk (@T3xanCadre) — [E1] Private (rank 30)

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

Rank structure

[CJCS] Chairman of Joint Chief of Staff1

[VCJCS] Vice Chairman of Joint Chief of Staff0

[CMC] Commandant of the Marine Corps1

[ACMC] Assistant Commandant of the Marine Corps0

[DEV] Developer3

[O10] General0

[O9] Lieutenant General0

[O8] Major General0

[O7] Brigadier General0

[O6] Colonel1

[O5] Lieutenant Colonel1

[O4] Major0

[O3] Captain1

[O2] 1st Lieutenant0

[O1] 2nd Lieutenant0

[CWO5] Chief Warrant Officer 50

[CWO4] Chief Warrant Officer 40

[CWO3] Chief Warrant Officer 30

[CWO2] Chief Warrant Officer 20

[W1] Warrant Officer 10

[SMMC] Sergeant Major of the Marine Corps0

[E9] Sergeant Major0

[E9] Master Gunnery Sergeant0

[E8] First Sergeant0

[E8] Master Sergeant1

[E7] Gunnery Sergeant1

[E6] Staff Sergeant0

[E5] Sergeant0

[E4] Corporal1

[E3] Lance Corporal0

[E2] Private First Class1

[E1] Private6

Member18

Guest0

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

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

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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.