Battle for Whiterun(Stormcloak)

Information
This quest belongs to the Stormcloak questline.

Quick Walkthrough

 * 1) Travel to Whiterun Military Camp to get your orders from Galvan Stone-Fist whom is standing in the front lines
 * 2) Run with the group and defeat the Imperial soldiers
 * 3) Defeat the Jarl

Detailed Walkthrough
When you get to the Whiterun Military Camp Galmar Stone-Fist will be standing next to a catapult, listen to his speech. He will tell you the objective is the drawbridge, which you must heave down.

Don’t worry about killing imperials as your comrades will and also they will continue to spawn, directly above the drawbridge is the mechanism used to lower it. Once the bridge is down, head for Dragonsreach where the Jarl is located.

When fighting the Jarl and his guards try and attack he only as his defeat will make the rest surrender.