As a Reincarnated Aristocrat, I'll Use My Appraisal Skill to Rise in the World 10 (manga)

The curtain opens on the battle for Verzud, which will determine the outcome of the war! Ars and his team confer with Ruper Roozton about a plan to free the hostages in Castle Rolto, with Ruper's pregnant wife among them. If their scheme is to succeed, however, Ars and Lumeire must act as decoys to lure the enemy out into the open. The Maitlaw Mercenaries, led by Couran, join them on this desperate rescue mission!

Volume 10 of the As a Reincarnated Aristocrat, I'll Use My Appraisal Skill to Rise in the World manga series by Natsumi Inoue.