A unit of nearly 500 priests was right behind the army and they were concentrating on casting large-scale spells to serve as backup.
A little further away from the army, knights in white armor mounted on pegasus just waiting for a signal to fly. It was the church's Sky knight unit, their version of the tamers.
They created monsters with an affinity for light as pets and weakened them before using the binding spell on them to make them familiar. The church did not allow its members to have monsters with any affinity other than light, considering it blasphemous.
There were pouches strapped to either side of the pegasus' cell, filled with glass bottles of alchemical items that the knights planned to bomb on the demihuman ships. It was the strategy the church formed to face the demihumans who were unable to use magic and had almost no means of attacking something in the sky.