Galaraldo had a very clear understanding of his own situation at the outset.
If he did nothing, he was as good as dead.
He was a War Apostle of the Sun Lord, the closest confidant of that great figure who had almost single-handedly wielded the Empire's supreme power for decades. When necessary, the Sun Lord even liked to exercise supreme authority directly through his War Apostles.
This was a very normal choice; in his view, the governmental system of the Empire was too cumbersome and inefficient. With his unmatched prestige, he would directly deploy War Apostles, either as the chief administrative officer of a vast Star Domain, as a tax officer to gather war materials (this was the role of Galaraldo), or directly appoint a War Apostle as the person in charge of a certain war zone, consolidating forces like the Star Realm Army, the Navy, and even the Interstellar Warriors, the state religion's nuns, the Tribunal, and the Sect of Mechanics...