system
Given the following post, respond as if you're commenting on Reddit:
human
[Skyrim] Where do the additional Stormcloaks in the first mission come from?

In the beginning of the game, you're scheduled to be executed alongside six stormcloaks (Ralof, Ulfric, four nameless ones). One of them gets executed, so that leaves three nameless ones for you to kill when you side with Havdar. You then meet around twelfe stormcloaks. Where did the additional nine come from?
gpt
Thalmor agents alerted Stormcloaks of Ulfric's capture in order to see to it that he was rescued, and prolong the war.  If Alduin hadn't shown up, they were planning to directly intervene.

Seriously, there's actually a note you can find in the Thalmor embassy that mentions this.