Building a Milsim Unit
from Scratch

Define Your Unit Before You Recruit

The units that fail fastest are the ones that start recruiting before they have answered the fundamental questions about what the unit actually is. Before you open a Discord or post a recruitment thread, decide and document:

• Game and era — Arma 3 or Reforger? If Arma 3, what real-world military are you representing — US Army, USMC, British, Bundeswehr, fictional? What era — contemporary, Cold War, WW2 via mods?
• Realism level — Full milsim (strict rank structure, formal training, mission briefings, attendance requirements) or casual milsim (mil-themed but flexible commitment)? Be honest. Many units lose members because they advertise casual and run strict, or advertise strict and run casual.
• Op schedule — How many ops per week? What timezone are you building around? A unit that runs Saturday nights only can still be highly successful if everyone knows that from the start.
• Unit size target — Are you building a squad-sized unit (12–20 active players), a platoon (30–60), or something larger? Your infrastructure needs scale with your target size.
• Mod loadout — What mods will your server run? This is a non-trivial decision. Simpler mod lists are easier for recruits to install and reduce the chance of compatibility issues. Finalise your standard loadout before your first op.

Write this down as a short unit overview document. It becomes the foundation of your recruitment post and your server's welcome message.

Set Up Your Infrastructure First

Nothing kills a new unit's momentum faster than running the first op and discovering your server crashes, your voice comms are misconfigured, or half the players have the wrong mods. Set up every piece of infrastructure before you recruit a single person.

Your Server Setup

For a milsim unit, you need a dedicated server — not a rented public slot. You need full control over mods, mission files, server configuration, and restart schedules. A dedicated server also signals seriousness to potential recruits; units running on host-your-own machines with poor uptime lose members fast.

For most squad-sized units starting out, an 8 GB RAM server handles the early months comfortably. As your player count and mod list grow, 16 GB gives you room to run more complex missions without performance issues.

Your standard server setup should include:

• ACE3 and CBA_A3 at minimum for most milsim units
• TFAR if you want integrated radio comms (requires TeamSpeak 3)
• Your faction/equipment mods (RHS, CUP, or a specific pack)
• A mission framework appropriate to your unit's operations (Antistasi for persistent campaigns, custom Zeus missions for planned ops)

Discord Structure

A well-structured Discord is as important as a well-configured server. New recruits form their first impression of your unit from your Discord before they ever play an op. Recommended channel structure:

• #welcome — unit overview, rules, and how to apply
• #announcements — op schedules, unit news, mod updates
• #mod-pack — pinned mod list with Workshop links
• #op-briefings — pre-op information and AARs
• #general — off-topic community chat
• Role-gated channels for each section/squad once you have structure

Recruitment: Quality Over Speed

The temptation when starting out is to take everyone who applies. Resist it. One disruptive or consistently flaky member in a 15-person unit damages cohesion more than being a few players short. Establish a minimum standard and hold to it.

Effective recruitment channels for Arma milsim units in 2026:

• Reddit — r/FindAUnit is the primary recruiting hub for the Arma community. A well-written post there will consistently bring in applications. Be specific about your unit's focus, schedule, and expectations.
• Arma 3 Unit Finder — Bohemia's official unit browser on the Arma 3 website. Lower traffic than Reddit but targeted.
• Discord communities — Arma-focused Discord servers often have recruitment channels. The Arma 3 Official Discord and various modding community servers are worth posting in.
• In-game — If you run a public server or public Zeus sessions, players who enjoy your server are warm leads for recruitment.

The Application Process

A structured application process filters out low-commitment applicants before they ever join. A minimum bar: ask applicants to read your unit overview and answer a few short questions — why they're interested, what timezone they're in, how much Arma experience they have, and what their availability looks like. A short probationary period before full membership is standard in serious milsim units and serves everyone well.

Training Pipeline

New members who join without proper onboarding are a drag on operations and often leave within a few weeks. A structured training pipeline solves both problems.

A basic pipeline for a milsim unit looks like this:

1. Basic training session — 60–90 minutes covering movement, communication procedures, weapon handling, and ACE3 medical basics. Run by an NCO or officer. This also serves as the unit's first real impression of the recruit.
2. Mod verification — Confirm the recruit has all required mods installed and can connect to the server without issues before basic training. Catching mod problems before the session saves everyone time.
3. Probationary ops — New members participate in a set number of operations (typically 3–5) before receiving full membership. They are evaluated on communication, following orders, and reliability.
4. MOS/role training (optional) — For larger units with specialised roles (medic, machine gunner, mortar team), additional role-specific training after basic membership is granted.

Running Operations

The quality of your operations is what retains members long-term. An op that is disorganised, too short, or runs without stakes will not bring people back next week.

Mission Design Principles

You do not need to be an expert mission maker to run good ops. Zeus (the in-game game master tool) allows a designated mission maker to design and run scenarios live. Key principles for missions that feel rewarding:

• Clear objectives with defined success conditions — players should know what they are trying to accomplish and be able to tell whether they succeeded
• Appropriate challenge level — too easy breeds complacency, too hard breeds frustration. Calibrate to your unit's current skill level
• Pacing — mix of tactical movement, contact, consolidation. Back-to-back firefights without breathing room is exhausting; long lulls without contact loses focus
• Consistent length — milsim ops typically run 2–4 hours. Communicate expected length before each op so members can plan

Pre-Op and AAR

A pre-op briefing (even 10 minutes) dramatically improves coordination. Cover the situation, mission, execution, and communications plan. After the op, a short After Action Review (AAR) — what went well, what didn't — builds unit knowledge over time and shows members that leadership is invested in improvement.

Keeping Members Long-Term

Most milsim units lose members to one of three causes: inconsistent op schedules, leadership drama, or stagnation. The fix for each:

• Consistency — run ops on a fixed schedule even when turnout is lower than ideal. Members plan their time around your schedule. Cancelling ops repeatedly breaks that habit.
• Transparent leadership — decisions about unit direction, mod changes, or structure should be communicated to the unit, not handed down silently. Members who feel informed stay longer.
• Progression and variety — campaigns with continuity and consequences, different mission types, occasional joint ops with allied units, and in-unit events (competitions, training exercises) prevent stagnation.