Shoukoku no Altair

Altair: A Record of Battles (将国のアルタイル, lit. "Altair: A Record of Battles") is a manga series written and illustrated by Kotono Kato. The manga has been licensed for digital release in English by Kodansha Comics.

An anime television series produced by MAPPA aired on July 7, 2017.

Plot
Kotono Kato, a historian, presents a fantastic tale woven of intricate historical details set in a time of war.

Mahmut is a young Pasha serving on the general's council of Türkiye. The clouds of war are gathering over his country. With Türkiye's council split between the warmongers and the pacifists, Mahmut begins his quest to keep the peace at any cost. As he finds himself deeper and deeper in the politics of the ancient world, new enemies and allies surface. Who will prevail? What will Mahmut do if war proves to be inevitable?

Other Sources

 * MyAnimeList