Battle for Whiterun (Stormcloak)

Walkthrough
After the Jarl of Whiterun declined to join the Stormcloaks in the Civil War, Ulfric Stormcloak has no choice but to conquer Whiterun to deny the Imperials this location of strategic importance in the centre Skyrim.

Get your Orders from Galmar Stone-Fist
Visit the newly formed Whiterun Military Camp, just south of the Whiterun, where Galmar Stone-Fist will swing another war-glorifying speech to rally the troops.

Note: The quick travel points "Whiterun" and "Dragonsreach" are presently deactivated.

Follow Galmar Stone-Fist
And then Galmar is off towards the city, follow him, or just attack on your own accord outrunning the Stormcloak troops.

Break through the Enemy Barricade
Approaching Whiterun from the south-east, destroy the wooden barricades.

Open the Exterior Gate
The exterior gate may already be open, if not open it.

Open the Drawbridge
Take the small winding outer path up the rock face get to the other side of the drawbridge and open if via switch.

Enter Whiterun
Enter the city.

Break through the First Barricade
Break through several barricades, by destroying them.

Break through the Second Barricade
Continue onward and repeat.

Break through the Final Barricade
Continue onward and repeat.

Force Jarl Balgruuf the Greater to surrender
In the castle Jarl Balgruuf the Greater will at first not surrender. So his personal guard will need to be killed, and the Jarl will need to be attacked.

Accept Jarl Balgruuf the Greater's surrender
Seeing that the battle cannot be won the Jarl will surrender. He will be given enough time to collect his belongings and be replaced by the new Jarl Vignar Gray-Mane.

Die Schlacht um Weißlauf (Sturmmäntel)