At the end of the second quest for the Stormcloaks, The Jagged Crown, you can take the crown to General Tullius, who will admit you to the Legion. If you do so, the Join the Imperial Legion quest will fail if it has been initiated however, you will have an opportunity to join the Legion later.
Speaking with her can initiate the quest Join the Imperial Legion.īefore you complete that quest, however, (or before you start it) you may instead decide to join the Stormcloaks. If you make no choice at that point, Imperial soldiers that you will encounter in your travels, or upon entering an Imperial camp will encourage you to join the Legion by going to Solitude, where you will be directed to Legate Rikke at Castle Dour. If you instead follow Ralof, you will be asked to join the Stormcloaks.
If you choose Hadvar, and then from the keep either accompany him on the road to, or leave and rejoin him in Riverwood, he will invite you to join the Imperial Legion, or he might make the offer in Alvor's house in Riverwood. Following your narrow escape from execution at Helgen during the quest Unbound, and just after Alduin flies off, you will have a choice to follow either Hadvar or Ralof into Helgen Keep.