The Revolt is the first part of three, the other being Vetera and The Empire Strikes Back.
In The Revolt you will get a view of how the situation in the Rhine Delta was before Civilis decided to start a rebellion.
You can read about the year of the Four Emperors, about Nero and Vittelius, about the Conspiracy and the causes that led to the Revolt. And finally the role of the Cananefates, another German/Celtic tribe in the Low Lands.