Editing Warhammer 40,000/8th Edition Tactics/Imperial Guard (section)

==Regiments and Regimental Doctrines==
These are your equivalent (but different) of Chapter Tactics, Legion Traits, Forgeworld Dogma, you get the idea. If your army is Battle-forged and every unit in the Detachment has the same {{W40Kkeyword|<Regiment>}} (with some exceptions, see below), you get one of these rules. You just replace the keyword {{W40Kkeyword|Regiment}} for one of the eight listed Regiments their Doctrines you want to use and you'll get the rule. 
====Custom Regimental Doctrines====
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With The Greater Good, the IG can follow in the footsteps of several other factions in making their own Regimental Doctrine, combining two of the following rules:
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*'''Agile Warriors''': {{W40Kkeyword|Infantry}} can re-roll advance dice.
*'''Combined Auspex''': When a vehicle fires Overwatch within 3" of another vehicle from the same Regiment, it hits on a 5+. Half of the Mordian doctrine.
*'''Disciplined Shooters''': {{W40Kkeyword|Infantry}} with Rapid Fire weapons fire an extra shot at 18" instead of the usual distance. Half of the Armageddon doctrine. A defensive buff pretending to be a offensive one, as many foes at 18" out won't be able to launch a charge in their next turn, (18" away moving 6" closer gives them a 12" charge)
*'''Fire from the Hip''': {{W40Kkeyword|Infantry}} can shoot Rapid Fire weapons after advancing, with a -1 to hit. Before considering this trait remember that there is an order that lets you do this for free with no penalty.
*'''Gunnery Experts''': When rolling to determine the number of shots it fires, a {{W40Kkeyword|vehicle}} can re-roll one of the dice. Half of the Catachan doctrine.
*'''Jury-Rigged Repairs''': At the start of the turn, roll a d6 for each {{W40Kkeyword|vehicle}} that has lost a wound. It heals one wound on a 2-4, and d3 wounds on a 5+. Who needs Enginseers?
**Further, you can take Gunnery Experts, and genuinely run some potent vehicles.
**Stacks with Enginseers: force your opponent to kill the tank or suffer. Double trouble on Atlases; not only can they repair other tanks, they benefit from this Doctrine themselves!
**While other regiment's tanks may shoot more accurately or more efficiently, this will make your tanks the toughest, forcing your opponent to kill tanks outright, lest you rebuild them with Elmer's glue and MRE wrappers.  
*'''Lords' Approval''': {{W40Kkeyword|Infantry}} melee weapons get -1 AP if within 9" of an {{W40Kkeyword|Officer}} (which includes tank commanders). No matter how many ways you stack the odds in your favor for CC, other CC armies will still smash you ('Nids, Orks, Chaos, [[Sisters Repentia|naked women with giant chainswords]]...) You might as well optimize for solid ranged warfare and/or durability of your vehicles. 
*'''Monster Hunters''': Heavy weapons inflict 1 mortal wound against {{W40Kkeyword|Monster}}s on an ''unmodified'' wound roll of 6. 
**This has a more noticeable impact the ''weaker'' the weapon's S, AP, and D, especially if you haven't got access to the ability to re-roll successful wounds. Focus on weapons with high A instead - heavy bolters and flamers, gatling cannons, etc.
*'''Pyromaniacs''': Flamers, heavy flamers, and twin heavy flamers re-roll wound rolls of 1. A very nice effect, but irritatingly leaves out vehicle-specific weapons on things like Hellhounds or the Malcador Infernus. 
*'''Slum Fighters''': {{W40Kkeyword|Infantry}} scores an additional melee hit on an unmodified melee hit roll of 6. 
**See Lord's Approval above. It's cool, but certain aliens are literally bred and evolved to slaughter you in melee. You can fight a little harder and kill a few more with this in melee, but you can do far more at range, out of melee.  That said, it works like +1 to hit only better, so it's most noticeable the worse your WS - put this on Conscripts to make them hit like regular soldiers.
*'''Spotter Details''': +6" to the range of heavy weapons with a range of at least 24". Half of the Vostroyan doctrine.
*'''Wilderness Survivors''': {{W40Kkeyword|Infantry}} that did not advance get the cover save bonus to their saving throws. Not bad, as you can still move and even get within 12" (or 18" if you combine with discipline shooters (hint hint)) of the opponent and use cover out in the open.  In fact, if for some reason you want to charge the enemy, you'll get the bonus against Overwatch shots, and even less likely, if you end up still in combat in the following shooting phase, it'll work on any pistols you get shot with.
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====Maintaining Regiment Doctrines====
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Most units in {{W40Kkeyword|Astra Militarum}} detachments (excluding Superheavy Auxiliary detachments) benefit from a regimental doctrine if every unit in the detachment has the same {{W40Kkeyword|Regiment}} and/or is on the list of units that do not break regimental doctrine. These units include:

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*{{W40Kkeyword|Aeronautica Imperialis}}. Not "this unit, and that unit", but all Aeronautica units, like Vendettas.
*{{W40Kkeyword|Militarum Auxilla}} AKA Abhumans, each and every single one.
*Ministorum Priest and Crusaders. Not {{W40Kkeyword|Adeptus Ministorum}} units, ''just those two''. 
*{{W40Kkeyword|Officio Prefectus}} AKA Commissars.
*{{W40Kkeyword|Militarum Tempestus}} units won't prevent your army from getting a Doctrine, but they themselves won't get their {{W40Kkeyword|Storm Troopers}} doctrine ''unless'' all other units are Tempestus themselves (or people from this list). So, if you want to bring Artillery or other vehicles, you'll need to bring them in a separate Spearhead detachment.
*{{W40Kkeyword|Scholastica Psykana}} AKA Primaris Psykers ([[Primaris_Librarian|no relation]]), Wyrdvanes, and Astropaths.
*Tech-priest Enginseer (either your copy, the elite with {{W40Kkeyword|Astra Militarum}}, or AdMech's copy, the HQ without) and Servitors. Not {{W40Kkeyword|Forge world}} units, just those three. Remember ''this is an Astra Militarum Detachment''. They DON'T gain a Dogma, NOR AdMech Stratagems, Relics or Warlord Traits. [[Warhammer_40,000/Tactics/Adeptus_Mechanicus(8E)|If you want those rules]], you can bring them in a separate Vanguard detachment, for all the good it'll do you.  

As alluded to above, Superheavy Auxiliary Detachments don't benefit from Doctrines. If you want a LoW with a Doctrine you need to take them in either a  Superheavy Detachment ('''3-5!''' Lords of War), a cheaper Supreme Command Detachment (3-5 HQs plus '''0-1 LoW'''), or give it the '''Steadfast Leviathan''' Tank Ace trait in a Superheavy Auxiliary Detachment.

*The '''[[Death Korps of Krieg|{{W40Kkeyword|Death Korps of Krieg}}]]''' and '''[[Elysian Drop Troops|{{W40Kkeyword|Elysia}}]]''' can also be selected as your Regiment, though they do not have a proper Regimental Doctrine. Instead, they get a modified unit and Order selection with several choices unique to them, along with a number of special rules that more or less form a Doctrine. They lack any unique Warlord Traits, Stratagems or Relics, but have access to all the regular ones. Check out their sections towards the bottom of the page for more information.
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