Militaristic

The Always War (Margaret Peterson Haddix)
Behemoth (Scott Westerfeld)
Conspiracy of Kings (Megan Whalen Turner)
Divergent (Veronica Roth)
Dragon & Soldier (Timothy Zahn)
Grace (Elizabeth Scott)
The Healing Wars trilogy (Janice Hardy)
The Hungry City Chronicles (Philip Reeve)
A Killing Frost (John Marsden)
Leviathan (Scott Westerfeld)
A Matter of Profit (Hilari Bell)
Monsters of Men (Patrick Ness)
Pendragon series (D.J. MacHale)
Specials (Scott Westerfeld)
Tommorow series (John Marsden)
The Virtual War (Gloria Skurznski)
Warriors series (Erin Hunter)