Greg Bear 
Hardfought [EPUB ebook] 

A Nebula Award–winning novella by the author of Moving Mars and the Eon trilogy.   Humans have been engaged in a long war against an advanced alien race, the Senexi. But the possibility for peace may finally exist, thanks to a young girl who learns of the enemy’s larger role and humanity’s opportunity to evolve, in this award-winning story by the author of Darwin’s Radio and many other highly acclaimed works of science fiction.