Marsh's Book Report on Behemoth (Leviathan #2) by Scott Westerfeld
Deryn and Alek are in the Ottoman Empire where they get mixed up with Turkish Rebels. They have to help them take down the German's Tesla cannon with their secret weapon while trying to keep the Ottomans from becoming Clankers. It is important that the Ottoman Empire remains neutral in the war--or that they join the Darwinists to help fight the Clankers.
Behemoth was all I was looking for in the sequel to Leviathan. It had more epic battles between the Darwinist and Clanker armies. There were also new characters introduced like Lilith, Lilith's father and her Grandmother. I liked how Lilith was sneaky and watchful.
I give Behemoth by Scott Westerfeld 5 MONSTERS.
This is an awesome book trailer for the Leviathan Series by Westerfeld, you really need to watch this: