This is no small amount.
First of all, even before this, Gu Hang had applied for the expansion of the Rage Bear Legion.
It wasn't that Gu Hang did this just to offset taxes; the performance of the Alliance troops at Korolya III was there for all to see. It was the people from the Fatches Family and the commander of the Dragonhawk Third Legion who hoped that the Rage Bear Legion could expand its roster to better support the military campaign on Korolya III.
Instead, Gu Hang sharply reduced the number of troops they asked for in the expansion.
If they expanded too much, they would have to send troops from Alliance's mainland, and that was unsustainable.
He merely incorporated the six divisions and brigades of the Central Group Army, originally dispatched to Korolya, into the Rage Bear Legion. Although five of them were of the lowest garrison division level, there were also elite units such as the 59th Armored Brigade.