Arios smiled before looking back toward the rest of the demon generals.
The truth was that they were very much used to battles that lasted for months at a time. Things like teleportation pads for rest and energy supplying fruits were completely foreign to them.
It wasn't that the demon sage didn't care for their wellbeing, but, he was equally as tough on himself. How could one complain as a general when you saw your head commander fighting just as hard as you? Especially when he took more upon himself than even they did?
There was also something all demon generals had that they had yet to make full use of.
As the chosen geniuses of the demon sage, they were also privy to some of his techniques. So, although it wasn't as complete as Dyon's version, each had their own understanding of Demon Emperor's Will. Add this to the fact that their bodies were already stronger than normal due to their mastery over demonic will, and their stamina was simply unquestionable.