Alien War Space Opera

King Agesilaus and his Terran Legions have won their first victory against the Median Empire. Despite sustaining heavy casualties, they established a vital foothold in enemy territory. Yet the Empire is far from defeated, and they begin to ready their forces for a counterattack. In a display of overwhelming power, they throw fleets of ships and armies of levies and mercenaries against the Terrans. The outcome is uncertain, until Agesilaus and his generals uncover a stunning secret

At least they're primates. That was Commander Riniana Tiana's first thought when she saw the primitive - but sentient - humans of Earth. She should be able to fit in...After all, her own species is primatal too. And she'd only come here to save them from invasion...But humans don't have tails. And most of them seem extremely jealous of hers! Using the curious custom of clothing, Tiana hides her tail, passes for human and pursues the alien invaders in a desperate struggle to save an ungrateful planet.

No one on Earth knows the seeds of the world’s destruction just fell from space. Tiana knows what duty means though. It's why all her friends are dead. Alone on a primitive world. All her all her technology at the bottom of the ocean. Outnumbered by deadly enemies only she can bring to justice. If she fails her mission now, another sentient species will fall. And the Tyrant Empire will rise again - because Earth has just been infected with a fatal parasite.