Changes

*'''109.[[M40]] or 109.[[M41]]:'''{{Fn|Conflicting Sources 2}} The Dennar IV Suppression — The Howling Griffons [[3rd Company (Howling Griffons)|3rd Company]], led by [[Space Marine Captain|Captain]] [[Penvath Joachim]], responded to a call for aid from [[Dennar IV]]. When they arrived at the [[agri world]], they discovered a handfull of city-states full of refugees holding out against a horde of cultists, some of whom were [[Daemonic Possession|possessed]] by [[daemons]]. Using their superior armour and tactics, the Howling Griffons rallied the local forces and led a long and bloody struggle to clear the planet of the uprising. After this action, the Howling Griffons have kept a lasting oath to protect the planet; in return they are able to count [[Dennar IV]] as one of their recruiting planets.{{Fn|7b}}

*'''143.M41:''' The [[Jorun Retaliation]] — En route to the [[Gothic War]] an Imperial Battlegroup, the [[15th Heraklion Ironclads]], turned on their [[Commissariat]] attachment and went renegade. Investigations into this turn of events uncovered the foul Xenos taint of [[Dark Eldar]], who had managed to ensnare and corrupt [[General]] [[Jorun]] and his command structure. Jorun and his fleet raided planet after planet, enslaving whole populations for their masters. The full Howling Griffons Chapter (about 8 Companies worth of Marines) was given command of the strike force, with support from the [[Ultramarines]] and [[Sons of Orar]] Chapters. Initial contact was made as the traitor forces were landing on [[Asturia]]. With no armour unloaded, it became a massacre, with over 5,000 Guard dying in an hour. The Howling Griffons' [[4th Company (Howling Griffons)|4th Company]], led by [[Chaplain]] [[Armand Titus]], led the final strike on Jorun's forces, fighting through Jorun's [[Ogryn]] cadre as well as [[Dark Eldar]] troops. Titus delivered the killing blow to Jorun, while slowly succumbing to poisoned wounds and sealing the fate of the Heraklion Ironclads.{{Fn|7b}} The campaign was not completed before the Howling.{{Fn|44a}}

*'''906-909.M41:''' [[Badab War]] — The Howling Griffons, along with the [[Novamarines]], responded to calls for aid. Having just finished a campaign in the [[Caradryad Sector]], the Howling Griffons' task force was no more than 250 Space Marines and had insufficient planetary assault resources to aid in front line assaults. As a result, their initial engagements were to carry out garrison duties or convoy protection.{{Fn|39}} Their largest deployment was to garrison the airless moons in the [[Khymara]] system, rebuilding old listening posts as staging areas for later in the war. Unfortunately in 4.003.907.M41,{{Fn|7a}} this posting put them in the path of the [[Executioners]] who were coming to aid the Secessionists as part of their blood oath to Huron.{{Fn|12}} The Howling Griffons were annihilated; after the [[Executioners]] withdrawal, the casualty rate was more than 70%, including the catastrophic loss of their strike cruiser, ''[[Augeias]]'', and [[Chaplain Dreadnought]] [[Armand Titus|Titus]]. Despite these losses, the remaining force continued to fight wherever they could until officially relieved in 909.[[M41]]{{Fn|7b}} The Howling Griffons made use of Insurgency Forces (five Marines, one armed with a sniper rifle.) and at least one [[Callidus Assassin]] during the war.{{Fn|35}}

*'''939.M41:''' [[Hive Fleet Leviathan|Leviathan Maimed]] — [[Battle Barges]] from the Howling Griffons and [[Aurora Chapter]] under the command of [[Chaplain]] [[Cassius]] onboard the [[Ultramarines]] [[Strike Cruiser]] ''[[Vengeance of Macragge]]'' track a tendril of [[Hive Fleet]] [[Leviathan]]. As the tendril passes an [[asteroid belt]] near the [[Jomm System]], they destroy the moon of [[Vendorak]]. The resulting shockwave causes asteroids to crash into the planet, depleting the hive fleet so it can't reach the planets of Jomm.{{Fn|48}}

===Undated===

*'''Dennar IV Rebellion''' — The Howling Griffons' [[3rd Company (Howling Griffons)|Third Company]] took part in this campaign.{{Fn|5a}} One of the battles was termed the '''Assault on Hill 103'''{{Fn|5d}}

*31: [[White Dwarf 180 (UK)]]:

**{{Endn|31a}}: pgs. 52–54

*{{Endn|32}}: [[The Guns of Enth (Short Story)]]

*{{Endn|33}}: [https://web.archive.org/web/20081015052340/http://www.games-workshop.de/warhammer40000/races/space-marines/artikel/galerie/index.shtm Order gallery at Games Workshop] ''(Archived 30 January 2009, last access 27 February 2021, pictures not saved)''