Angus, the Warrior (Cadet Magnum Book 8)

Cadet Magnum gets a taste of real dogfighting in space as the intergalactic aliens attack. His effort to organize the United Planets pays off, and he leads their combined forces into a winner-take-all battle in deep space. As an unsung hero, Angus returns to the Academy for his third year to face the seemingly endless threat of his unknown nemesis.