Navarre studied at the most prestigious Military Academy within the Losea Kingdom.
He didn't become the strategist of the brigade just because of his Arcana. It is due to his deep knowledge of military strategies, various Arcane Skills, behaviors of Evil Beasts, and many Arcane Mysteries that would help them in a battle.
One of the things he learned in the Academy was the existence of the Deities… They were beings that can literally dictate the fate of the world.
He also read an ancient book about some myths regarding their existence and how they could destroy a country with a single word from them.
"D-do you have a proof about it?" Navarre asked.