The new Space Marine Codex makes every Marine hit harder while armies get smaller, so you’ll face fewer models, but they will be tougher and stronger now!
Of all the things GW could have changed on Marines, the humble boltgun getting buffed probably wasn’t high on anybody’s list. It’s been sitting at Strength 4 forever, and now it’s finally getting some teeth. Better yet, this change is in the new 11th Edition Space Marine codex itself, instead of showing up in a dataslate that could disappear again three months later.
The book itself is the flagship release for Warhammer 40k 11th Edition, following the template the Ork Codex set as the first 11th Edition drop. We already saw the kits and the book together in the first look, and plenty of what’s inside traces back to the Armageddon launch box.
Overall, they’re getting 230 pages, plus a pretty serious statline overhaul along with it. So if you’ve been watching the codex release schedule and wondering whether Marines were getting a proper book or another batch of faction pack PDFs, there’s an answer now.
New Space Marines Codex Has 15 Detachments and Three Editions You Can Buy
Updated on September 10th, 2026 by Rob Baer with the first Combat Doctrines rules preview.
- What’s New: Marines didn’t need a power bump, but GW gave them a pretty fundamental one instead of just fiddling with points.
- Latest Rules: boltguns move to Strength 5, Terminator plate moves to Toughness 5, Phobos units stay at Toughness 4 but jump to 8 inches of Movement, and the same treatment rolls out to every Astartes flavor in the game.
- Army Rule Preview: Oath of Moment is gone, and Combat Doctrines now lets Space Marines switch between charging after Advancing, shooting after Advancing, or shooting and charging after Falling Back.
- Biggest Takeaway: points can make the army smaller, but they can’t put the wound roll back where it was.
New Space Marine Codex Price & Release Date:
- Space Marine Codex Release Date: October 3rd, 2026
- Pre-Order Date: September 19th, 2026
- Retail Price (MSRP/RRP): $40(USD). Regional pricing is listed below.
Games Workshop is going pretty hard on the new Codex: Space Marines, with three different versions of the 232-page book coming for 40k players. There’s the regular softback, a fancier Special Edition hardcover, and a Limited Edition loaded with enough extras to make even a veteran Chapter Master start checking the hobby budget.
All three versions contain the same actual rules, lore, artwork, and hobby content, including 15 detachments covering a pretty broad spread of Space Marine army styles.
They also confirmed the Gladius Task Force and Ironstorm Spearhead return alongside more specialized options such as Terminator Storm Force, Phobos Shadow Force, Gravis Siege Force, Assault Brethren, Tactical Brethren, and Devastator Brethren.
Oath of Moment is Dead, and Combat Doctrines Are Back!
Here’s a pretty big change: GW’s first Space Marines rules preview confirms that Oath of Moment is gone from the new codex. Combat Doctrines takes its place, giving Space Marines three options that can each normally be selected once per battle. Only one doctrine can be active for a unit at a time unless another rule says otherwise.
- Assault Doctrine: A unit can still charge after it Advances.
- Devastator Doctrine: A unit’s ranged attacks gain [ASSAULT].
- Tactical Doctrine: A unit can still shoot and charge after it Falls Back.
The Assault Brethren, Devastator Brethren, and Tactical Brethren detachments each get one extra use of their matching doctrine. Plus, the Unique: Doctrines tag means players still have to pick a favorite.
Now Captains can activate whichever doctrine their own unit needs, even when the rest of the army is using a different one. Another cool bonus is that their new Transhuman Strategist ability also generates one extra Command Point in every battle round.
So, a Tactical Brethren enhancement can keep a Captain in Tactical Doctrine permanently alongside any other active doctrine, while Roboute Guilliman simply has all three active at all times.
The right doctrine also powers up some character abilities too. Characters like Adrax Agatone go from re-rolling wound rolls of 1 to full wound re-rolls in Assault Doctrine, while Caanok Var gets Sustained Hits 1 against everything except Monsters and Vehicles plus Lethal Hits against Monsters and Vehicles in Tactical Doctrine instead of choosing just one.
Space Marine Codex Q&A Gives Older Marines Some Breathing Room
GW’s latest Space Marine Codex Q&A cleared up quite a few of the questions left hanging after the 11th Edition reveals, especially if your collection predates Primaris Marines.
Firstborn units leaving the codex will use Legendary Proxies at launch before getting proper Legends datasheets weeks or months later, with Tactical, Assault, and Devastator Marines specifically mentioned. They’re also sticking around in the lore, even if their tabletop support is shifting firmly toward Legends.
Primaris Marines can finally ride in Rhinos, which now hold 12 models, while Deathwatch are getting a digital supplement with both full-army and smaller allied detachment options. Grey Knights keep several older Marine vehicles for now, and Bjorn, the Baal Predator, plus Chaos Predators and Vindicators all escaped this round of cuts.
Meanwhile, GW is sticking with its plan to make Marines tougher, stronger, and more expensive rather than handing the rest of 40k immediate weapon buffs to compensate. Expect fewer Marines on the table, but each one should be noticeably harder to shift.
Space Marines Datasheets Power Up in 11th Edition
The new Space Marine datasheets are giving familiar units much sharper roles. Guilliman keeps every Combat Doctrine active, can Advance, Fall Back, Shoot, and Charge freely, and hands a nearby unit an extra doctrine that stacks with the army’s current choice.
Librarians gain selectable powers, while Sternguard Veterans choose between anti-Vehicle and infantry-clearing weapon profiles whenever they shoot. Terminators get tougher, gain better bolters, and bring chainfists and assault cannons built to crack armored targets.
Basic Marines are changing too. Bolters, chainswords, combat knives, and bolt pistols move to Strength five, Tacticus armor reaches Toughness five, and Phobos units trade that extra durability for an eight-inch move.
Check out our full breakdown of the new Space Marine datasheets for all the rules and what they could mean on the table now.
Your 2,000 Points Buys Fewer Marines Now, and Every One Hurts More to Lose Now
So, those new stat buffs aren’t free. Points are increasing with profiles, and Marine armies are getting smaller as individual warriors get better. That’s been the fantasy around Space Marines forever anyway: fewer models that are better troops, with each one actually feeling like an elite soldier instead of another model you pull off the table by the handful.
We like that direction, and best of all, if you were planning to start Marines with the Armageddon box, you’ll need fewer models to fill out 2,000 points now!
The Buffs Don’t Stop at Codex Chapters
One of the best details came near the end of the video. GW is spreading the same stat changes across every Astartes and Heretic Astartes variant in the game instead of leaving half the power-armored factions stuck on older profiles.
Chaos Space Marines and Grey Knights were both called out. We’re talking Strength 5 storm bolters and Toughness 6 Terminators. Grey Knights only just got their 11th Edition detachments sorted, so now those changes are landing on top of a faction that was already moving. Anyone following the Grey Knights coverage knows they don’t exactly get free upgrades every day.
The Chapter supplements are also going away with the old codex. Blood Angels, Dark Angels, Space Wolves, and Black Templars are getting digital updates instead, including datasheets and new detachments, with no extra book purchase attached. We’re certainly not going to complain about free rules here.
It does leave four armies depending on digital updates instead of a book sitting on the shelf, though, and Chaos players who remember waiting on their own codex have already seen how that kind of setup can go over time.
Either way, those changes will hit Warhammer 40,000: The App automatically when the Space Marines codex launches in October.
Having those updates land in the app with the codex saves a lot of messing around, especially once multiple Marine books and Legends units are involved. GW used the same setup with the Orks codex rollout, and it looks like the rest of the codexes will follow the same schedule.
230 Pages Means GW Still Believes in the Book
Two hundred and thirty pages is a chunky codex for an edition where the actual rules can show up on your phone for free. A lot of that page count seems to go toward the setting instead. The lore section walks through a fortress monastery, from the Apothecarion where Marines are created to the Hall of the Fallen where the Dreadnoughts sleep.
That gives the physical codex more value now that codex pricing and book format keep shifting. If the rules are going digital anyway, the book has to offer more than an expensive stack of datasheets.
The rules side is also being handled sensibly, too. Everything updates automatically in the Warhammer 40,000 app when the codex arrives in October, following the setup GW explained in the 11th Edition Q&A on book changes and USRs. It also lines up with Wahapedia now carrying every 11th Edition rule in one place, too.
Final Thoughts on the New Space Marine Codex
Space Marines are already the most-played army in 40k, and now GW is making the models on the table better at the jobs they’re supposed to do. The Space Marines Codex release in October will show us how it all works together once the points are attached.
Those points costs overall will probably absorb part of the upgrade, and increase overall, as they should. They can reduce how many Marines you bring, but they can’t undo Strength 5 boltguns or tougher Terminators in the game now. Which is why the rest of the 11th Edition codex schedule may be more interesting than the Marine datasheets themselves.
The next few books should tell us whether GW is fixing Marines specifically or setting a new baseline for everybody else, too!
Where To Buy The New Space Marine Codex
11th Edition Space Marine Codex
Pricing varies by item and region; for the complete lineup and regional prices, check our 11th Edition Space Marines pre-order coverage.
If you’re looking for Warhammer discounts or just trying to dodge the usual out-of-stock scramble, our retailer guide has options broken out by region below.
🔗 Related Reads:
- Warhammer 40k 11th Edition Rules: Release Date, Detachments + Every Change
- New 40k Codex Release Schedule: 2026 Roadmap for 11th Edition
- New 11th Edition Space Marines Detachments Drop Big Buffs For Every Major Chapter
- Warhammer 40k Orks Codex Review: 15 Detachments, 54 Buffed Units
- 11th Edition Grey Knights Detachments: Paladins, Purgation and Interceptors Get New Rules
- New 11th Edition Space Marines Coming in the Armageddon Box
- New 40k Space Marine Kits and Codex: FIRST LOOK
What do you think about Strength 5 boltguns landing on the most-played army in 40k?
Two points:
1. As a Death Guard player, I can assure you that T5 won’t change how fast marines die. My T6 marines are glass cannons without detachment specific defensive buffs.
2. If every other marine is getting tougher, what are Plague Marines and DG terminators getting?
I like these updates overall, but I can’t help but think this is in response to Space Marine player feedback that had them complaining about T5 for Leagues of Votann. This is a pattern that is often repeated: A xenos army gets something that’s better than what Space Marines have, then many Space Marine players write in to GW asking for upgrades.
During 9th and 10th edition his may have happened as a result of the Leagues of Votann bolt gun profile too. It was better than the Space Marine equivalent for a while, then GW upgraded the Space Marine bolt rifle due to feedback.
Anyway, a lower model count for Space Marines is fine by me. This means I can have a painted army on the table more quickly, and for less money.