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|This unit is specialized in fighting [[Tyranid]]s due to heavy experience against the beasts in the [[Second Tyrannic War]]. The unit was wiped out by [[Ouroboros (Hive Fleet)|Hive Fleet Ouroboros]],{{Fn|40}} but later refounded.{{Fn|38}} It is known that [[Corporal]] [[Webb (Cadian)|Webb]] served in this Regiment and fought with some unknown enemy, who used holograms to hide its tanks.{{Fn|34}} It fought in the [[13th Black Crusade]]{{Fn|38}} and [[Octarius War]]; during the latter conflict, the regiment served as part of [[Inquisitor]] [[Athocles Van Roth]]'s private army.{{Fn|62}}

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|Garrisoned [[Mihok Secundus]] during the planet's invasion by the [[Alpha Legion]] in 361.[[M37]].{{Fn|15}} After the war with [[Waaagh! Badun]] the Regiment received a replacement in the form of warriors from the [[Taronian 6th Regiment]] that was heavily mauled in abovementioned war.{{Fn|3a}} Sometime in M41, a company of the regiment was attached to [[Task Force Retribution]] on their hunt for the [[Eldar]] [[Farseer]] [[Taldeer]]. During the search, the attachment was reformed into the 3rd company of the [[1st Kronus Regiment]].{{Fn|29b}}

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|Fought against the [[13th Black Crusade]].{{Fn|38}}

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|While garrisoning [[Mihok Secundus]] in 361.[[M37]], the regiment fought in the '''Defense of Cobalt Valley''' against the invading [[Alpha Legion]].{{Fn|15}} The regiment was lost when the ship carrying them, [[Cadia's Hand]], was fused into the space hulk [[Olethros]] in 892.[[M41]].{{Fn|42a}} Also known as the ''"Emperor's Hounds"''{{Fn|83}}

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