The Sergeant's Apprentice: Schooled in Magic, Book 11 (Unabridged‪)‬

The Nameless World Goes to War!

The necromancers have finally resumed their assault on the Allied Lands, sending a mighty army across the Desert of Death and into the Kingdom of Tarsier. Countless farms, villages, and towns have already been destroyed as the host makes its way northwards, striking deep into the kingdom's most vulnerable lands. Hundreds of thousands have been killed, thousands more will be killed when they are sacrificed for power. If the necromancers win the coming battle, it may be the beginning of the end.

When Sergeant Miles invites her to join the coalition force, Emily reluctantly accepts. The necromancers have to be stopped, even if it means taking time off from school to serve as the sergeant's apprentice. But with arguing aristocrats, reluctant soldiers, fearful civilians, shadows from her past, a dangerously-sane necromancer and treachery in the ranks, stopping the invasion may cost Emily her life.