Battle for Windhelm

Background
"I am to join General Tullius in the final attack on Windhelm, putting an end to the Stormcloak rebellion, once and for all."

Walkthrough
The Battle for Windhelm is the final Imperial Legion quest, ordered by General Tullius, who wishes to take over the city of Windhelm to find Ulfric Stormcloak and force him to submit. After an inspirational speech by General Tullius, the Dragonborn fights through waves of Stormcloak soldiers alongside the Legionnaires. The Palace of the Kings is then raided, where Ulfric and his right-hand man Galmar Stone-Fist await. Once Ulfric is defeated, he will request that the Dragonborn be the one to kill him, as it would "make for a better song," although the Dragonborn can refuse and allow General Tullius to strike the final blow.

After Ulfric and Galmar are defeated, General Tullius will reward the Dragonborn with a leveled sword. Upon returning to Windhelm, Brunwulf Free-Winter will become the new Jarl and will offer the Dragonborn the title of Thane of Eastmarch as well as the opportunity to buy Hjerim, the house availabe in Windhelm (12,000). At this point the city is now under Imperial control, thus the Stormcloak guards are replaced by Imperial Soldiers.

Trivia

 * During this battle, Stormcloak Soldiers will keep spawning if the Dragonborn stays in one area too long, or if the Dragonborn goes into an area without breaking down the barricades for Imperial Soldiers to join him/her.
 * After Ulfric has just been killed is a good time to loot the palace if desired. A room upstairs via the first door on the left after entering the palace is filled with the Stormcloak-aligned Jarls and their housecarls, many of which are unkillable, (but not all).
 * After General Tullius is done making his speech, both he and Legate Rikke will leave, but the group of imperial soldiers will not.
 * It is impossible to betray General Tullius at this point, he cannot be killed.
 * Once killed, the bodies of Stormcloaks de-spawn almost instantly, making looting them very difficult.
 * It is possible for a dragon to spawn during the battle outside the Palace.
 * If Tullius and Rikke and all the imperial soldiers are killed using console commands after the speech, Ulfric and Galmar's body will not disappear from the Palace of the Kings, but Tullius, Rikke and all the Imperial Soldiers' bodies disappear.
 * If the Call Dragon shout is used during the battle. Odahviing will only kill Stormcloaks, and no Imperial soldiers.

Behind the scenes

 * Unless otherwise stated, the information above was obtained from in-game play or from The Elder Scrolls V: Skyrim Creation Kit.

Appearances

 * The Elder Scrolls V: Skyrim