Space Marine battle companies are the four fighting companies at the heart of a Codex-compliant Chapter. They’re the units that actually deploy for most engagements, and they’re built to handle anything from a firefight to a full-scale war.
What a battle company is
In a standard Codex Chapter, the 2nd, 3rd, 4th, and 5th Companies are the battle companies. Each one is meant to be about a hundred Marines strong, and they’re the first choice for most combat deployments.
They’re not specialists like the 1st Company veterans or the 10th Company scouts. They’re the all-rounders: a mix of troops, close support, and heavy firepower that can be tailored to whatever the mission needs.
How they’re organised
Every battle company follows the same template. It’s split into two demi-companies, each led by a Lieutenant. Within that, you get six Battleline squads (Tactical or Intercessor), two Close Combat squads (Assault, Reiver, or Inceptor), and two Fire Support squads (Devastator, Hellblaster, or Aggressor).
They also have their own transport pool: Rhinos, Razorbacks, Land Speeders, and bikes. Most companies keep a couple of Dreadnoughts on hand too. That mobility is a big part of why they can respond to so many different threats.
- 6 Battleline squads: Tactical or Intercessor
- 2 Close Combat squads: Assault, Reiver, or Inceptor
- 2 Fire Support squads: Devastator, Hellblaster, or Aggressor
- Support: Rhinos, Razorbacks, Land Speeders, bikes, and around two Dreadnoughts
Why they matter
Battle companies are the backbone of a Chapter’s fighting strength. When a Chapter goes to war, these are usually the formations that do the heavy lifting. The Reserve Companies (6th through 9th) exist to reinforce them, and the 1st Company’s veterans get called in when things get really bad.
In game terms, they’ve been the core of many Space Marine armies for editions. The classic Battle Demi-Company formation gave you Objective Secured on everything, which made them brilliant at holding ground while still hitting hard.
How they fit into the Chapter
A Codex Chapter has ten companies total. The 1st is veterans, the 2nd to 5th are battle companies, the 6th to 9th are reserves, and the 10th is scouts. The battle companies sit right in the middle: more flexible than the reserves, more numerous than the veterans.
That structure means a Chapter can scale its response. One battle company can handle a raid or a small war. Two or more, plus reserves, means something much bigger is happening.
Key facts
- Battle companies are the 2nd, 3rd, 4th, and 5th Companies of a Codex Chapter.
- Each is notionally 100 Marines, split into two demi-companies led by Lieutenants.
- They contain six Battleline, two Close Combat, and two Fire Support squads.
- They maintain their own transports and usually a couple of Dreadnoughts.
- Reserve companies (6th to 9th) exist to reinforce them in larger engagements.
FAQ
Which companies are battle companies?
The 2nd, 3rd, 4th, and 5th Companies of a Codex-compliant Chapter are the battle companies. They’re the main combat formations, as opposed to the veteran 1st Company, the reserve 6th to 9th, and the scout 10th.
How many Marines are in a battle company?
Notionally about a hundred, split into two demi-companies. In practice, numbers can vary depending on casualties and reinforcements.
What’s the difference between a battle company and a demi-company?
A demi-company is half a battle company, led by a Lieutenant. Two demi-companies make up a full battle company, and they’re often deployed separately or together depending on the mission.