Книга Fire Density

Brigadier General Dean’s new life continues.  Now he is Cadet Igor Lavroff, who has managed to defeat a fatal disease, enroll in the Planetary Commando Academy and survive in battle on an enemy-occupied planet.
He is still far from completing the task assigned to him by his command in his past life. But he moves steadily towards his goal, despite the intrigues he faces, the backstabbing  and the large-scale alien offensive threatening to destroy the Earth Federation long before Dean can fulfill his mission.