The Battle of Castobel
Hive Cressos is the primary hive on Castobel,with a population nearing 84 billion souls, where the council chambers of the Aquilan council is situated. The current situation in the hive is close to revolt after several brutal and fierce counter riot measures has been used by the Adeptus Arbites, with the sanction of Imperial Governor Varanis, that functions as the imperial liaison on Castobel.
The Hive itself itself comprises a full manufactorum, where several STC construct have been found including a variant of the common lasgun with a larger output per shot, a imperial army academy, training facilities for the Castobel guard regiments, that are currently supporting the crusade in the sector, and of course several major cathedrals to the Emperor of mankind.
It is also said that Saint Drusus entered the Jericho Reach and landed in the hive, immediately fell down at the magnificent sight of the cathedrals and welcomed Castobel back into the Imperium.