He started with a slow flight, only half of the maximum speed, but shouts came from behind instantly.
What Ash forgot to take into account was the extra weight everyone was carrying and the power difference between him and everyone else.
He was a fourth-layer mage while the others were between the second and third, but mana body increased the distance even more.
"Stop complaining and fly faster, you incompetents! We're already being left behind by the vanguard troops; we can't slow down even more!" A sky wing flying just behind Ash shouted at those falling behind.
The beastman was the leader of the squadron and should have been the arrowhead if it weren't for Ash's presence.
All groups were led by a tempest eagle beastman since the weaker members of the sky wing clan were also sent to the mixed army, and the army wouldn't allow someone from a lower clan to take command.