The Howling Griffons are a Loyalist Space Marines Chapter founded in the 33rd Millennium from the gene-seed of the Ultramarines. This Chapter fought in the Badab War and saw extensive action in the 13th Black Crusade, fighting against Chaos Plague Marines in the defence of the world of Amistel Majoris. The Howling Griffons take a special pride in their oaths, seeing each as the promise of an unending effort until the deed sworn in the oath is accomplished or the oathtaker has been slain in the trying. Before battle, additional oaths are often added to the Howling Griffons' already long lists of promises, some sworn for the Chapter as a whole and others that are far more personal for each Astartes. Once an oath is taken, a Howling Griffons Astartes goes to extreme lengths to complete it and