Terms of Enlistment (Frontlines #1) by Marko Kloos
Loved this one* (Do you see the asterisk?)
Great story. Great characters. Great syfy. Reads fast. Excellent use of 1st person. Loved it. Fans of Scalzi should feel right at home.
*Too many f-bombs. Who can find me some really cool military syfy with out all the language? It must be out there!