Alternate Caesar History

[Jona Lendering]

True. But that was 58. After the conquest of Gaul, Caesar's focus had swept west, and securing the Upper Danube by conquering the Alps (as we see was the logical next step for Augustus) meant securing the flank of Gaul. Just a guesss, of course.

I see what you mean; yes, you are right. Once the Romans had reached the Rhine, Raetia and Vindelicia were doomed.