There is another shock when, after suppressing the Treveri, the far more powerful Aedui tribe rises up, led by an Aedui nobleman named Gaius Julius Sacrovir, the half-brother of Gnaeus' former Primus Pilus and the current Camp Prefect, Tiberius Sacrovir. Not only are the Aedui more numerous, they are better equipped, and it quickly becomes obvious to Gnaeus and other officers that Sacrovir the Aedui had assistance from a very powerful but secret ally. It is not until after the climatic and final battle that the source of that aid becomes clear, and that Gnaeus' nemesis Varro is at least peripherally involved, but it is at whose behest that drags Gnaeus back into a world where danger is around every corner that he thought he had escaped, where his famous name is at least partly responsible.