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1-509 PIR

1-509 PIR #7514493

1
members (measured 12 Oct 2026, 20:46 UTC)
22 August 2020
created (per Roblox API)
10 August 2026
first measured by this register

Description

The 509th Infantry Regiment is an airborne infantry regiment of the United States Army. Nicknamed "Geronimo", the 509th conducted the U.S. Army's first combat jump during World War II on 8 November 1942, flying 1,500 miles from England to seize Tafarquay airport in Oran, Algeria. The 1st Battalion remains active and serves as the Opposing Force (OPFOR) at the JRTC.

Written by the group; not a statement 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 We do not publish numbers we have not measured.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)MembersChange
29 Aug 2026, 01:561first reading

Ownership

Owned by Webby (@webby678) 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

Webby (@webby678) — Commanding Officer (rank 255)

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

Rank structure

Commanding Officer1
First Sergeant0
Commissioned Officer0
Warrant Officer0
Staff Non-Commissioned Officer0
Non-Commissioned Officer0
Junior Enlisted0
Advanced Individual Training0
Member1
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.

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.