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

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.

Reaper Crew, UK/EU Arma Milsim. Fridays 19:00 UK time. Midweek's sometimes.

The Kings 1st Infantry is a British Milsim unit formed by two Veterans. We aim to provide an authentic milsim experience for all backgrounds, whether that be civvy street or military.

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

Are you looking for an immersive, highly organized, and team-first MilSim experience? Special Operations Command is officially accepting new candidates to join the ranks of the elite Marine Raiders. We replicate modern Marine Special Operations Command (MARSOC) tactics, structures, and deployment pipelines.

Ghost Platoon <GPLT> - founded in 2014 - is the premier light infantry and 75th Ranger Regiment milsim unit in the Arma 3 community. If you're looking for organized operations, real-world TTPs, and a platoon that expects you to improve - not just show up - this is where you belong. Earn your place here.

3RD SPECIAL FORCES GROUP "Grimstone" ARMA REFORGER MILSIM RECRUITING DE OPPRESSO LIBER When others hesitate, we deploy. 3rd Special Forces Group Milsim is recruiting disciplined, motivated players who want realistic Special Forces operations without the drama. We focus on teamwork, immersion, and professional conduct—modeled after U.S. Army Special Forces, adapted for Arma Reforger. WHAT TO EXPECT: Authentic Green Beret–style missions Small-unit tactics & unconventional warfare Persistent operations and story-driven campaigns Structured but player-friendly training Experienced leadership & mature community Realism without screaming or ego ROLES AVAILABLE: Weapons Sergeant (18B) Engineer Sergeant (18C) Medical Sergeant (18D) Communications Sergeant (18E) 160th SOAR Crew Chief (15T) The Crew Chief is the first step in becoming a 153A Rotary Wing Aviator Support & Enablers (New to milsim? We WILL train you.) WHAT WE IN 3SFG REQUIRE: Arma Reforger (PC, Xbox, PS5) Working mic & Discord Maturity, reliability, and willingness to learn Team-first mindset No prior milsim experience required OPERATIONS EXPECTATIONS: Scheduled operations Optional training events Real life always comes first If you’re looking for brotherhood, professionalism, and missions that matter, then step forward. Earn the tab. Join the detachment. 3SFG GRIMSTONE https://discord.gg/MM5RfTTWw

Looking for more than standard infantry operations? UK SFSG is an EU Time zone based Arma Reforger Milsim Unit built around immersive operations, varied roles and opportunities to progress through specialist training. We also host people from other time zones due to work scheduling etc. Available and upcoming roles include: 🪖 Infantry (Parachute Regiment/RM Commando) 🩺 Medical 🚁 Aviation (RAF/AAC) 🪂 Airborne Operations 💥 Fire Support Group (Coming Soon) 🎯 Special Forces Selection Pipeline 📻 RTO/Signals Whether you want to be on the ground, support the mission from the air, provide medical support or work towards a more specialised role, UK SFSG offers a path for you. We are continually expanding our courses, capabilities and operational opportunities. Think you have what it takes? Join our Public Discord and find out more!

The 1st Battalion, 75th Ranger Regiment is a realism-focused milsim community dedicated to teamwork, discipline, and immersive tactical gameplay. We host daily operations, weekly training events, and large-scale campaigns that challenge players in dynamic combat environments. Whether you’re an experienced milsim veteran or just getting started, we provide the training and leadership needed to help you succeed. We are currently recruiting for multiple open positions across our Infantry, Armor, and Aviation elements, with opportunities ranging from entry-level operators to leadership roles. If you’re looking for an active, organized unit that values professionalism, teamwork, and realistic operations, join the 1/75 and become part of the mission.

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?

Task Force Halberd is focused on realistic infantry and combined-arms operations. We emphasize tactical proficiency, teamwork, communication, and disciplined execution while adapting real-world military concepts into an enjoyable and practical in-game experience. Home to the developers of the Bifrost Modding Team

The Bronze Path. Forged and bolted to a foundation of training, responsibility and expectations. Bronze is a US Navy SEALS pathway that sees its members enter with training requirements at BUDS. From there the path is yours to decide. Find a home with ST8 or SOAR, the 24th STS, or push DEVGRU requirements and try out as an elite operator on the Tier 1 side. (Currently Reforming) Either way you cut it, expectations are high. We run as an 18+ unit focused on PC Gameplay and immersion. Our leaders, shop members and story tellers focus heavily on story driven narrative both offline and online in mission. You can expect intelligence to be utilized, missions to be dynamic, and the other members around you to be professional. Welcome to Bronze. Forge a path. Earn your place.

[EU] The MDF is a Hardcore Milsim team with a focus on challenging operations and immersive combat. Think you've got what it takes?

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!

Established in 2003 as realism units in PC gaming. Our focus is straightforward: solid teamwork, consistent training, and a professional environment where members can 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.

MAKO runs weekly operations and asks members to make one a month. The structure is there for members who want to take it seriously, and it stays out of the way for members who just want a good Saturday night. Our modpack is built around KAT, ACRE2, Project M, and a set of private mods maintained in-house.

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!

[NA] A Halo-inspired milsim focused on small-unit tactics, realism, teamwork, and immersive experiences. Operations at 8pm EST on Thursday's.

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

Est. July 4th, 2016 - Operations that require real tactics, training, and quality teamwork to succeed. Join 1 of 3 Marine Special Operations Teams (MSOTs) or the 160th SOAR, SOF Rotary Aviation

Founded in 2026, the 1/A/11 Shock Troops Battalion is a semi-milsim ArmA 3 unit focused on realism, teamwork, and high-tempo combat operations. Our unit is centered around emulating an ODST Platoon, specializing in rapid-response pod drops and precision-based missions. We prioritize fun while delivering structured gameplay without unnecessary complexity.

10th Mountain Division is a structured milsim unit focused on teamwork, leadership, and consistent mission-driven operations. We provide organized campaigns, clear progression systems, and realistic small-unit tactics without unnecessary overcomplication. Our community is built for players who want disciplined but enjoyable gameplay, where every role matters and members have real opportunities to grow. Whether you’re new to milsim or experienced, 10MD offers a stable environment to learn, lead, and execute

Joint Task Force Olympus (JTFO) is an experienced ArmA III special operations unit built around structure, discipline, and excellence. Led by a seasoned command staff, we offer a streamlined, no-nonsense environment focused on performance, development, and mission success.

Made of Real Combat & SOF Vets Teaching tactics to the highest level Omega 90 Offers: - Solidified Unit / High Performance Server - Custom Mods / Dedicated Zeus's - Realistic Mission Creators Inspired By Real World Experiences - Mature Adult Attitudes & Team Cohesion - Established Real TTPs & SOPs - Large Mission Variety; To Include: o Counter-Terrorism o Special Reconnaissance o Direct Action, etc. The primary goal of Omega is for like-minded veterans and civilian personnel to learn and to improve in the conceptualization of military tactics and theory through video games and media. We are the most realistic, specialized Arma unit.