Browse All Units

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

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

A US Navy task force built on realism, discipline, and kinetic operations. Mission nights run from quick surgical hits to full-scale assaults, driven by a dedicated Game Master and Storyteller — no two nights are the same. All recruits start in our Marine Corps detachment, complete the Marine Infantry Course, and take a billet in our infantry platoon. Grow within the Marines, or try out for a JSOC detachment down the line.

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

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

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

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?

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.

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.

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

The 9th Ranger Regiment is a Semi realism WW2 Ranger unit focused on delivering a grounded experience of WW2 combat. If you couldn’t get into World War 2 because of insanely casual units and it pissed you off because you’re autistic like us, then the 9th could be a good home for you. The 9th is a platoon oriented unit that focuses on small unit tactics and the enjoyment of the player. We have historical accuracy within the unit yes, but have a deep understanding of what keeps players wanting more. Outside of the game there is no yes sir no sir bullshit that comes with other units, but when Op time comes around we flip the switch to a serious infantry combat experience. If you have the same deep levels of autism for the Second World War but also want to have a well structured experience, check us out.

Realism milsim based on the US Army's III Armored Corps. Established late 2025 so there is plenty of room to advance through the ranks.

Blue Rebels Command is an organized Arma Reforger milsim group. We pride ourselves on professionalism, teamwork, and creating an immersive experience without sacrificing a welcoming community. Every operation is planned, every role matters, and every member contributes to mission success. What We Offer: • PvP & PvE Operations 
• Tournaments
 • Tactical Training & Skill Development 
• Active Daily Player Base 
• A welcoming community • Organized leadership • Unit Roles/ MOS/ Pipeline with room for advancement. • Realistic scheduling and requirements Come check us out. Rebs up! 🫡 https://discord.gg/tkCFddzheE

We are a casual yet hardcore unit that strives to have fun without the need for or pressure of attendance requirements and consistent training. We utilize a structured system for those seeking serious gameplay, while also allowing those who wish to have a laid-back experience to enjoy a fun and engaging time. Our modpack comprises KAT, ACRE2, and various other private mods, providing a hardcore yet enjoyable experience for everyone involved. This unit does not look for hardcore tactics, and strategy towards our mission, and we focus on having a fun time over focusing on CQC skill and ability.

Our mission is to recruit, train, sustain, and deploy scalable, expeditionary forces worldwide to accomplish special operations missions assigned by U.S. Special Operations Command

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.

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.

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

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

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.

Canadian Tactical Group was established in April 2020. We emulate Canadian Special Forces, primarily basing ourselves on the Canadian Special Operations Regiment. We often work within an RP’d NATO taskforce.

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

Albion Rising Is a British PvE MilSim server found on Arma Reforger. We are a community focusing on a full immersive experience throughout It's campaigns. The server Is open daily with a schedule for campaign operations with the other days being for R&R or training.

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!