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We are a serious community that strive to promote an immersive and professional environment by providing a structured military experience. Air assault!

Founded in June of 2007, the 15th MEU Realism Unit has maintained the standard of realism gaming in the ArmA community since its beginning.

Clandestine Services Group built for high-performers with a prior foundation. No ranks, just results. Select few. Prove you belong. 80% Fail rate

The Lost Battalion is a semi-realistic Arma 3 unit playing as US Army Rangers. Experience immersive, structured MilSim without the “Yes Sir” fluff. EU Unit

👋 Join Phoenix-Battalion. is an EU-based SEMI-milsim crew. With Real ops, custom missions, chill teamwork & tactical vibes. In multiple gamesmodes ! Lets build it together !!!!

We are 2-7 Infantry. We welcome old and new players alike, offering regular warfare as the US Army. Join our discord for more information or to apply!

The mission of our unit is to create an authentic Marine Corps environment, where members experience the structure, discipline, and brotherhood of the Corps.

We prioritize combined arms high-level coordination and tactical discipline without the power-tripping. Every mission is part of a persistent campaign where your squad’s performance dictates the story and losing assets impacts your future options.

United States Marine Corps / Arma Reforger MILSIM Unit. Actively seeking to fill the following MOS'S: Infantry, Corpsman, Pilots, Recon and MARSOC Do you have what it takes?

The 183rd Air Assault Realism Unit is a unit based upon a United States Army Air Assault Division. Established in 2014 and continuing to maintain excellence!

We host deployment operations on our private servers using: terrain, weapons, radios, vehicles, and modifications. Submit an Application Today!

Dive into B.I.A.'s unique MilSim experience, engaging in company-level operations with over 100 players. Explore various eras, from WW1 to modern conflicts.

A semi-serious Air Assault themed Milsim comprised primarily of mature adults, Veterans and Active Duty military! This community focuses on immersive gameplay and structured military weekly operations in Arma Reforger across all platforms.

SEAL Team 3 is an ARMA 3 military realism unit that mimics the Cold War Era real world operations of a SEAL Team.

The 72nd Special Forces Group (Airborne) is a tight-knit community full of Veterans, Active Duty, LEO, and serious MILSIM players who train and operate the way Special Forces were meant to — disciplined, adaptive, and human. Our focus isn’t on numbers or shiny ranks. It’s on trust, precision, and shared hardship. We value real experience.

40 Commando are a battalion within the UK's famous Royal Marine Commandos. We specialise in conducting amphibious raiding and high speed assault operations!

Established in 2003 as realism units in PC gaming. Our focus is straightforward: solid teamwork, consistent training, and a professional environment where members can improve their skills and enjoy playing together. We value commitment and longevity, Soldiers are recognized with Anniversary gifts as a simple way to acknowledge time and dedication in the unit.

Task Force Green is a relaxed MilSim who emphasizes fun while maintaining a high operational standard. Despite the relaxed atmosphere our team members are able to flip the switch and handle their business on target.

Welcome to the 2nd Battalion, 6th Marines Milsim, a serious and immersive military simulation unit. We have two rules: Real life will always be first and if you show up, show out!

The 7th Cavalry Gaming Regiment often referred to as "7Cav" is a long-standing Military Realism (MILSIM) unit that primarily plays first person military shooter

The 22nd MEU is a semi-serious Arma Reforger unit established in 2025, focused on coordinated gameplay, realistic tactics, and solid teamwork.

47Cdo isn't your typical infantry unit. We're the Cavalry backbone of Royal Marines operations - the ones who bring overwhelming firepower when needed most.

4MMR blends real USMC structure and tactics with a laid-back MILSIM vibe. No egos, no mandates — just solid ops and good people who’ve done this since BF3.

Regimental Combat Team 5 (RCT-5) includes 3D LAR, 3/5, and HMLA under RCT-5 Command. Vets/New Joins welcomed. Very active unit with weekly operations.

Welcome to the 4th Ranger Regiment [4RR], an ArmA 3-based milsim unit dedicated to replicating the teamwork, tactics, and weapon systems of the Army Rangers.

2DAB is a Special Forces-focused Arma 3 realism unit delivering immersive, teamwork-driven operations with challenging, story-rich campaigns.

We are Chill-Sim group that focuses on Tactics and Teamwork to succeed in our missions. We run Operations Weekly. We run a campaign-based mission set. We have a dedicated GM that makes our OP's and keeps them running as we go and acts as our Main Command Asset. Our server is modded for players to be able to customize the personal experience. We run a GRS based Mod list and is currently sitting at around 12GBs. We have players on all platforms, so all are welcome.

Phantom Company is a British-style Arma Reforger milsim unit, focused on disciplined infantry, combined arms and story driven campaigns, we run structured train

Reaper One An immersive, special forces–inspired team built on precision, discipline, and impact.

The 101st is a serious MILSIM which have been in the Arma Community for five years. We represent the 101st during the Vietnam War from 1965 - 1972.

The 72nd , founded in 2013, is comprised of over 50 active members which provides a relaxed mil-sim experience in the ArmA III gaming community.

Founded in late 2020 Task Force Chaos (TFC) is a collection of like-minded individuals who enjoy hardcore and team oriented gameplay.

🔰𝐄𝐥𝐢𝐦𝐢𝐧𝐚𝐭𝐞 𝐭𝐡𝐞 𝐥𝐚𝐠 𝐛𝐞𝐭𝐰𝐞𝐞𝐧 𝐢𝐧𝐭𝐞𝐧𝐭 𝐚𝐧𝐝 𝐢𝐦𝐩𝐚𝐜𝐭. 𝐇𝐢𝐠𝐡-𝐟𝐢𝐝𝐞𝐥𝐢𝐭𝐲 𝐬𝐢𝐦𝐮𝐥𝐚𝐭𝐢𝐨𝐧 𝐦𝐞𝐞𝐭𝐬 𝐮𝐧𝐜𝐨𝐦𝐩𝐫𝐨𝐦𝐢𝐬𝐢𝐧𝐠 𝐥𝐞𝐭𝐡𝐚𝐥𝐢𝐭𝐲. 𝐌𝐚𝐬𝐭𝐞𝐫 𝐭𝐡𝐞 𝐦𝐞𝐜𝐡𝐚𝐧𝐢𝐜𝐬. 𝐄𝐱𝐞𝐜𝐮𝐭𝐞 𝐭𝐡𝐞 𝐨𝐛𝐣𝐞𝐜𝐭𝐢𝐯𝐞. 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 𝐭𝐡𝐞 𝐀𝐎. 🔰

Hello! We are the King's Royal Regiment, a semi-serious ArmA 3 unit. We have various modsets & settings for operations but mainly do Modern, Cold War or Vietnam

The MDF is a Hardcore Milsim team with a focus on challenging operations and immersive combat. Think you've got what it takes? OPS: TUE/THUR/SUN - 6:30PM UK TIME (ARMA 3 UNIT)

The Marine Raider Regiment is a milsim unit inspired by the real-world mission set and operational philosophy of the Marine Raiders. We focus on small, highly capable teams conducting demanding missions where discipline, coordination, and decision-making matter more than numbers or firepower. Our goal is to replicate the types of operations Marine Raiders conduct in real life, while keeping everything within a respectful and fictional milsim environment. Professionalism, adaptability, and trust within the team are core to how we operate.

12th Armoured Brigade Combat Team - We specialise in Mechanized infantry and heavy armour. Part of the PJHQ network operating alongside other units!

We are a milsim without the filler content. No 3 hour formations or anything crazy like that, here at GRU everyone is in the action from the commander down to private. We let our members vote on where we go, who we fight and what objectives to take next your input matters here. We don’t do a bct we prefer you show us what you got on the battlefield. So what say you are you ready to join the team? We are new started January 19th and are looking to fill leadership roles.

ReaperSix Milsim group emulating 80s/90s/Cold War, and modern USMC Force Recon Operations. •Campaign operations are conducted Saturdays @08:00 AM EST.

SOCOM is an elite Arma 3 Milsim unit focused on realism, tactics, and teamwork—founded by SOF vets for those who value tactical and immersive gameplay

Est. April 23, 2020 - We are a dedicated infantry group well known on the field for our excellent shots and maneuverable tactics. Join us today!

Est. July 4th, 2016 - Operations that require real tactics, training, and quality teamwork to succeed. Join 1 of 3 MSOTs or our 160th SOAR Aviation Section