Battlesaurus 

Brian Falkner
Square Fish
2015

Battlesaurus, written by author Brian Falkner, is an alternate history book focusing on a teenage boy named Willem, living in the French town of Gaillemarde, during the events surrounding the famous Battle of Waterloo in 1815. The alternate part of the history is the fact that dinosaurs, here known simply as “Saurs”, are alive and well on the European continent. But rather than being fearsome giants, they are treated as merely wild animals, because none found so far are much larger than a raptor. That all changes, however, as Napoleon Bonaparte, the exiled French emperor, has found himself in possession of a larger and much, much more dangerous Saur, a secret weapon which he intends to unleash during the Battle of Waterloo and claim victory.  Read more