|The Mordian 2nd were part of the [[Macharian Crusade]] and were victorious in their objectives during the [[Invasion of Jucha]].{{Fn|2a}}
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|align=center|3rd
|The Mordian 3rd is one of the most decorated and celebrated Iron Guard regiments on Mordian. It took part in the defence of Hive Barbarossa against an [[Ork]] [[Waaagh!]] during the [[Battle of the Marble Garden]].{{Fn|3a}}
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|align=center|4th
|Known only by [[Quotes Astra Militarum#M|saying]] of its [[Imperial Guard Captain|Captain]] [[Macros]].{{Fn|11}}
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|align=center|[[Mordian 7th|7th]]
|Fought against the 13th Black Crusade.{{Fn|6}}
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|align=center|10th
|Fought against the 13th Black Crusade.{{Fn|6}}
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|align=center|11th
|Fought in the [[Sabbat Worlds Crusade]], notably at the [[Battle of Balhaut]].{{Fn|4}}
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|align=center|[[Mordian 16th|16th]]
|Fought against the 13th Black Crusade.{{Fn|6}}
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|align=center|[[Mordian 17th|17th]]
|Fought in the [[Battle for Honoria]], in which they were led by [[Colonel]] [[Oosthousen]].{{Fn|18}} Also fought against [[feral ork]]s on [[Kallash]].{{Fn|45}}
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|align=center|[[Mordian 24th|24th]]
|Fought in the [[Third War for Armageddon]], but only a few of its [[Guardsmen]] remain after the [[Regiment]] was ambushed by [[Orks]].{{Fn|44}}
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|align=center|26th
|The Mordian 26th served under Lord Marshal [[Graf Harazahn]] of the [[Vostroyan Firstborn]], supreme commander of the Imperial forces on [[Medusa V]].{{Fn|8}}
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|align=center|[[Mordian 33rd|33rd]]
|The 33rd Mordian Iron Guard, alongside the 91st, made up the defense of a city-sized promethium refinery on the planet of [[Phrixis]] against a [[Tyranid]] splinter fleet. They held out for months, until the 91st were wiped out by a cataclysmic explosion caused by a dying Tyranid bio-titan. Those of the 33rd that survived the explosion were found along the perimeter, and holding the line against the Tyranid swarms until their ammunition ran dry and they were wiped out.{{Fn|14}} The unit also tooke part in the [[Fall of Medusa V]].{{Fn|39}}
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|align=center|48th
|Known as ''Maven's Fusiliers''. Fought alongside the [[Cadian]] 16th Armoured Division at [[Kasr|Kasr Sonnen]] on [[Cadia]] during the [[13th Black Crusade]], where they gained fame for fighting to only 5 men left against [[Chaos]] forces.{{Fn|41}}
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|align=center|50th
|Known as the ''Fort Baton Regulars''.{{Fn|13a}}
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|align=center|56th
|The 56th Mordian is a mechanised force,{{Fn|1b}} responsible for ending the [[Komarl Revolt]]. Their execution of a tenth of the planet's population for failing in their duty to the Emperor, and the fear of further reprisals, ensured the planet's future loyalty to His divine rule.{{Fn|3b}}
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|align=center|[[Mordian 84th|84th]]
|Took part in the [[Battle of Gathalamor]]{{Fn|21}}, [[Kamidar|Revolt on Kamidar]]{{Fn|37}}, [[Barren (Planet)|War on Barren]]{{Fn|38a}}, and the [[Battle of the Stygius Gilt|assault on the Blackstone Fortress]] belonging to the [[Hand of Abaddon]].{{Fn|38c}}
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|align=center|91st
|The 91st Mordian Iron Guard, alongside the 33rd, made up the defense of a city-sized promethium refinery on the planet of [[Phrixis]] against a [[Tyranid]] splinter fleet. They hold out for months, until the 91st are wiped out by a cataclysmic explosion caused by a dying Tyranid bio-titan.{{Fn|14}}
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|align=center|93rd
|The 93rd Mordian Iron Guard took part in the defense of [[Cadia]] during the [[13th Black Crusade]]. The regiment was wiped out, its final soldier dying during the defense of [[Kasr Myrak]].{{Fn|16}}
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|align=center|98th
|Dispatched by the [[Imperial Governor]] of [[Malaeor]] to put down a gathering of pilgrims, responsible for the spread of [[Retchpox]] disease. The gathering led to the summoning of the [[Great Unclean One]] [[Obloxxothrax]] and his plague minions, who overran the 98th.{{Fn|35}}
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|align=center|[[Mordian 113th|113th]]
|Fought against the 13th Black Crusade.{{Fn|6}}
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|align=center|[[Mordian 199th Heavy Infantry|199th]]
|Designated as heavy infantry. Fought in [[War Zone Chalnath]]. Part of reinforcements from the [[Riatov System]] that prevented [[Wlydreach]] from being overrun by the [[Cult of the Reaping Talon]].{{Fn|40}}
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|align=center|[[Mordian 201st|201st]]
|The [[Cyclops Demolition Vehicle]] of the 201th Mordian used for crowd control during the occupation of Hive Secundus of the [[Hive World]] [[Vaust]].{{Fn|5e}}
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|align=center|276th
|The [[Mordian 276th]] fought against the [[Dark Eldar]] of [[Archeon]] [[Asdrubael Vect]].{{Fn|7b}}
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|align=center|278th
|The Mordian 278th took part in the battle for [[Baric Six]] when it lost two entire armoured companies due to a [[Deathstrike Missile Launcher]] stolen by Ork [[Lootas]].{{Fn|3c}}
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|align=center|[[Mordian 415th|415th]]
|The ''Old Indefatigables'', as the 415th are nicknamed, forged themselves a legendary reputation during the last bloody months of the [[Karnak Crusade]].{{Fn|43}}
