I'd remove directions, like "in the south" for not telling me anything that matters on the back cover. "Seeking advantage" isn't very dramatic. Nor is "seems"
If I were to edit it might look like this (take it for what it's worth)
To conquer their rival nation, the Imetrium, the theocratic empire of Durcac sends its armies forth, General Nārkizā at its helm. Faithful but skeptical, he must now balance his conscience with loyalty towards his god and homeland.
Bored with the peaceful life of a scholar, the young mage Carzain joins the armies of war, and in its chaos finds his calling - and the truth behind the dark secrets of his past.
And in the shadows, a sinister force thought long extinct awakens, a secret, ten-thousand-year war between two shadowy brotherhoods ready to erupt in full flame.