Commodore Shenandoah Imperial Navy. Commodore Shenandoah is the Close Orbit Superiority Commander in theatre; Commander Amodis’ deputy and highest ranking Naval Officer in this theatre of war. He is with 17 Korps because they were where the action was at the beginning of the campaign. He is an experienced Cruiser Captain and may well, assuming he survives this posting, find himself a Vice Admiral soon enough.
Fleet Captain Ferdinand Santiago Imperial Navy is the Orbital Bombardment Officer. Actual details of the Orbital Bombardments are done by the Orbital Bombardment CoOrdinator, Captain Caberra. Fleet Captain Santiago’s actual job, regardless of the title, is to de-conflict the various assets in the airspace above the battlefield. Ferdinand lost his arm years ago in a boarding action - it was bitten off by an Ork. He has a prosthetic one, but doesn't wear it.
Captain Zanti Caberra, Imperial Navy. Captain Caberra is the Orbital Bombardment CoOrdinator, his job is to order naval strikes from orbit in response to calls for fire from trained officers at the front line. His previous job was as a Destroyer Captain and he hates dirtsiders and being on a planet. This is just something he has to do before he can continue his career.
Captain Tablet Mostue Imperial Navy. Captain Mostue is the Orbit/Surface Interface Officer. His task is to ensure that the vital communications links (vox and data) between Navy assets (both orbital and airspace command) are not lost and remain secure from interference. His previous job was as Captain of the Frigate 'Jericho's Fortune'. He likes to think of himself as a swashbuckler.
Squadron Leader Samine Gibbres, Imperial Navy. Squadron Leader Gibbres is an experienced Fury pilot. She was posted to a Thunderbolt Squadron at the outset of the Devos IV campaign and so far has ejected from three airframes for both mechanical and combat related reasons. Commodore Shenandoah has decided that whilst a good space fighter pilot, she's a liability in a Thunderbolt. She now serves as his aide-de-camp, a role in which she appears to be flourishing. Despite being a space-sider, she manages to get the Imperial Guard to listen when protocol and logic fail. Funny ol' thing.