In the first half of the -66 century the expedition had reached its peak. Maghast had published his life's work already and all of the creatures that lived on the island were already nicely described and plenty of information has already been gathered on them. Because of that, the expedition now changed its focus: it stopped being about discovering about the creatures and studying them and it was now about trying to seek treasures that as once left behind in this mysterious land.
It was because of that that Commander Serthes (the man that commanded the military front of the expedition) was exploring the Grand Desert alongside some of his fellow soldiers. However, they did not come back, for they were found and killed by Beshal, the Traitor (this information is not divulged before the EAL campaign). However, Beshal decided to revive them using necromancy magic and crafted a magical bond into their bodies that sealed their lives in servitude of Amled, the God of Instinct and Despair. Since then, Serthes have been working as a slave for the Undying, carefully preparing and waiting for its arrival from its banishment. When the War of Doom, Serthes was assigned as one of Oxabal's trusted generals, helping the fallen angel to achieve his objectives in Ralbun Island in the year 94 ABE.