Vengeance Weapon – Макс Глебов

The final book in the Brigadier General series.
The defeat of the enemy fleet was not a final victory.
The enemy is still strong and ready to fight, relying on the ancient weapons of the ancestors, and Admiral Lavroff is forced to constantly look back, waiting for a stab in the back, as the Empire, from an unreliable ally of the Earth Federation, is increasingly becoming a new threat.