» Sun May 13, 2012 4:41 pm
Ralof is a Stormcloak, and Hadvar is an Imperial Legion.
They're at war with each other. Why? Because the Stormcloacks believe Skyrim should secede from the Empire while the Legion is trying to crush the rebellion and keep Skyrim in. You'll find Nords in both sides of the conflict.
There's no foreign invasion, it's not Skyrim vs. Cyrodiil.