Editing Warhammer 40,000/9th Edition Tactics/Space Marines (section)

====Special Rules====

*'''Chapter Tactics - The Flesh is Weak:''' 6+++ Feel No Pain - ''this doesn't work with supercharged plasma since that slays models without wounding them (except the ones mounted on vehicles; spam those plasma redemptors)'' - and Scions of the Forge (models with a damage table are considered to have double the number of wounds with respect to said table). So not only is Steel strong, but it's also ''reliable''.
**Being more difficult to kill is an obvious bonus to your Warlord, but unlike Guilliman, who is classified as a {{W40Kkeyword|Monster}}, your {{W40Kkeyword|<chapter> infantry}} Captain can be healed by an Apothecary. And then you add the Shield Eternal...yes, it's [[Chapter_Master_Smashfucker#8TH_EDITION:_CAPTAIN_SMASHFUCKER_AND_THE_IRON_BASTARDS|Smashfucker]] all over again.
**Stronger than it first appears, because there is an interaction with units of multiple multi-wound models and weapons that deal more than 1 damage. After failing your save, you are allowed to roll for each lost wound individually. For example, a unit of 2 wound models being attacked by a D2 weapon is approximately 35% more durable. This is because if you save either one of the lost wounds (27.78% chance to resist exactly 1; 30.56% chance to resist at least 1) it takes a whole second shot to even try to kill that model, thanks to damage not spilling over.
***This improvement is still ''best'' on 1-wound model units - the interaction above means it's not as worse on multi-wound as it first appears, and Iron Hands have some kick-ass Primaris units, but the ability is generally more noticeable the fewer wounds the model with it has remaining.
***While your boost to survivability is around 20% to the RG's 25%, yours isn't situational, and even works in the melee Shock Assault urges you to be.
**Vehicles also get a noticeable boost from this. Even before you account for the FnP effect, the slower rate of stat loss from damage will keep your tanks and dreads at full effectiveness for much longer than vehicles of other Chapters. 
***The boost's benefit also varies with Wounds, as GW tends to use the same algorithm to build all of your degradation tables.  By and large, this ''reduces'' the tendency of wounds to be useless - for example, ordinarily going from W13 to W14 is not useful, because the extra wound happens in the middle band of the degradation table, compared to going from W10 to W11, where the extra wound happens in the top band.  Under Iron Hands, both wounds show up on top.  The effect is particularly noticeable on W11 and W15, and at its absolute worst when Wounds is a power of 2 - your W16 Land Raiders will get the least benefit from this compared to most other things you can field. 
*'''Combat Doctrine - Calculated Fury:''' Whilst the Devastator Doctrine is active, models with this ability do not suffer the penalty for moving and firing Heavy weapons. In addition, when resolving an attack made with a Heavy weapon by a model with this ability, re-roll hit rolls of 1.
**Fully half of your Chapter Tactics only apply to models that weren't suffering a penalty to moving and shooting anyway, but don't let that worry you.  Plasma Redemptor Dreads can make ''excellent'' use of your Chapter Tactics + this re-roll.
**GW, in all its wisdom, has decided to roll back the changes to Doctrines automatically cycling in Q1 2023. This means you can now continue to stay in the Devastator doctrine for the entire game, and because SM no longer pay for weapon options, [[Bullshit|you can go ham on the heavy weapons with additional AP, no movement penalty, and re-rolling 1s.]] (Devastators? Nah, think Eradicators).
***This is especially egregious when you consider that Iron Hand Devastator spam ''was the entire reason'' for the change in the first place: powergamers would take drop pods filled with Grav and Melta, then first turn wipe anything that could potentially be a threat. And because they had a 6+++, they were very sturdy and could potentially take 2 turns to remove, and then the opponent has to deal with the Repulsors/Leviathan/character dreads that are slowly marching from your Deployment zone.