Changes

*The [[Battle of Malak]] during the [[Arks of Omen Campaign]]. 80% of [[Indomitus Crusade Fleet Quartus|Fleet Quartus]] is destroyed or corrupted by [[Khorne]] after [[Angron]] assaults [[Malakbael]] and destroys the [[Choral Engine]].{{Fn|24}}

[[Image:IndomitusGroup.jpg|thumb|right|Organisation of a typical Indomitus Crusade Battle group]]

Despite being under the overall command of Roboute Guilliman, the Indomitus Crusade did not operate as a single force. Rather, it was a massive ever-growing fleet divided into many formations that varied greatly in size and makeup. Each of these Fleets had their own [[Space Marine]], [[Imperial Guard]], [[Imperial Navy]], [[Adeptus Mechanicus]], [[Sisters of Battle]], [[Sisters of Silence]], and [[Adeptus Custodes]] detachments. Supporting these were support groups from the [[Adeptus Arbites]], [[Inquisition]], [[Officio Assassinorum]], and [[Ecclesiarchy]]. The Fleets were identified by number, such as ''[[Fleet Primus]]'', ''[[Fleet Secundus]]'', ''[[Fleet Tertius]]'', and so on and fell under the command of a [[Fleetmaster]].{{Fn|7}} There are currently 10 known Battlefleets, each of which is massive. The size of Fleet Primus alone surpasses that of all Imperial forces gathered in the [[Macharian Crusade]].{{Fn|15c}}