Here’s the new Horus Heresy Mechanicum Combat Force contents list, release date, rules, value, and pricing in our updated savings breakdown!
Originally published in August 2025. This post was updated on September 15, 2025, by Rob Baer with the latest links to all the combat force contents, pricing, and values.
The Mechanicum got one of the brand-new Horus Heresy Combat Force Boxes, and we’ve cracked it open to see if it’s worth your hard-earned hobby dollars.
From chasing value to revamping your machines, we’ve broken down the contents, release date, updated rules, and savings so you know exactly what you’re getting before heading to checkout.
If you’re wondering how this box stacks up in points and plastic to the other Combat Forces and Combat Patrols for 40k, we’ll break it all down here.
Contents List, Release Date, Pricing & Value
The new Mechanicum Combat Force retail price is $170, just like 40k’s combat patrols (see below for local currency conversions).
Plus, we also know the Mechanicum Combat Force release date will be October 4th, 2025. Here is the Horus Heresy Mechanicum Combat Force contents:
- 6x Thallax
- 2x Castellax Battle-automata
- 1x Thanatar Cavas Siege-automata (with plasma mortar)
- 4x Transfer sheets
HH Mechanicum Combat Force Review
The new Mechanicum Combat Force is pure battlefield efficiency in a box. It’s stacked with the machines and tech-thralls you need to kickstart a serious army. Pick this up and you’re not starting an army, you’re unleashing the Omnissiah’s will with a force that’s ready to scorch the Age of Darkness.
GW might even copy 40k’s Combat Patrols and make a game mode for these boxes in the future, too!
Mechanicum Combat Force List Price: $170 CAD$200 £100 €130
| Models | Unit Name | Value |
| 6 | Thallax Cohort | $80 |
| 2 | Castellax Battle-automata | $80 |
| 1 | Thanatar Cavas Siege-automata | $105 |
| Mechanicum Combat Force | ||
| Total MSRP: | $265 | |
| Savings Versus Box Price: | $95 | |
Combat Force Horus Heresy Comparisons
Check out how the new combat force stacks up against other bundle box releases, including the Adepta Sororitas Combat Patrol box from 2024.
| Box Set Name | Price | Qty of Minis | Value |
| Deathwing Assault | $220 | 22 | $124 |
| Mechanicum Combat Force | $170 | 9 | $95 |
| New Adepta Sororitas Combat Patrol | $168 | 26 | $59 |
| Dread Talons Battleforce | $230 | 35 | $140 |
| Stompa Boyz Battleforce | $210 | 23 | $166 |
Combat Force Pricing By Country
| Country | Price |
| United States | $170 |
| Canada | CAD$200 |
| United Kingdom | £100 |
| Europe | €130 |
Is it Worth It?
Compared to a normal Combat Patrol for 40k, this actually has great value! If you’re planning on playing Mechanicum, you can’t really go wrong with this box.
It gets you a good starting force with some big, heavy constructs to back everything up. So, whether you are a new player or have a decent army, this basically gets you a Thanatar for free, and that’s a deal we’ll take any day.
How Many Points Is This?
Well, if you’re wondering about the Mechanicum Combat Force points? In games of Horus Heresy, this box is around 700 points (which can change a lot depending on how much you upgrade and equip your units).
What to Buy Next?
You’ve got a solid mix of units in this box, and it doesn’t pin you into a single playstyle. Six Thallax give you mobile firepower and scoring presence, backed up by two Castellax Battle-automata who can hit like a truck. Then there’s the Thanatar Cavas Siege-automata, which is basically a walking artillery piece that makes sure your opponent never forgets where they left their cover.
If you can pair this with something like the Mechanicum Heavy support Box or pick up more automata, you’ll be well on your way to a seriously intimidating force.
Of course, down the line, you’ll still want to grab more support options: Krios, transports, or some Tech-thralls for objective control. The Mechanicum shines when you can mix layers of machines into a brutal wall of firepower.
While this box won’t get you all the way to a full army, it’s a fantastic starting core. Points-wise, you’re looking at a decent chunk, and it’s perfect for smaller Horus Heresy clashes while you build up toward the big battles.
Where To Buy Your Box
Snag your new combat force from our handpicked list of retailers and give us a high-five in support! Every qualifying purchase helps Spikey Bits keep the lights on and the fun going.
Quick Order Links To Get 15% Off or More:
- Mid Atlantic US: Fabricators Forge | Bazooka Games | or | The Rogue Traders |
- Central US: Wargame Portal | Collector Store | Dicehead Games | Noble Knight Games | or | Warpfire Minis |
- West Coast US: Frontline Gaming | Gamers Guild AZ | or | Squad Marks |
- UK: Element Games (UK) | Merlin’s Minis | or | Wayland Games |
- Canada: Fenris Workshop | Tista Minis | Abyss Game Store | or | Kingdom Titans |
- Worldwide: Amazon | eBay | or | Games Workshop’s Store |
- This box contains a whopping 50 brand new miniatures: A Praetor clad in Saturnine Terminator armour A Centurion wearing MkII Crusade-pattern power armour 40 Legionaries in MkII Crusade-pattern power armour Six hulking Saturnine Terminators A massive Saturnine Dreadnought An Araknae Quad-Accelerator Platform Two sets of Disintegrator weapons, that can be used to turn the Legionaries into Veterans
- These miniaturs are unpainted and needs to be assembled. We recommend using Citadel Plastic Glue and Citadel Paints.
Last update on 2025-10-23 / Affiliate links / Images from Amazon Product Advertising API
Final Thoughts From Us: Mechanicum Combat Force
So, is the Mechanicum Combat Force worth it? Absolutely, if you’ve ever wanted to roll out a squad of murder-robots backed by a walking artillery platform, this is your ticket. It’s not a complete army, but it’s a seriously mean starting point that gives you solid mobility, brutal firepower, and one very angry Thanatar ready to light up the battlefield.
We think this box gets you plenty of Mechanicum bang for your buck.
See All The Horus Heresy Combat Forces Here!
What do you think of the new Mechanicum Combat Force, pricing, value, rules, contents list, and release date?
