Reunification of Skyrim

It is a large quest with several sub-quests. It is a major part of the Skyrim Civil War, provided that the Dragonborn sided with the Imperials at the Battle for Whiterun.

Background
"I will help General Tullius quell the Stormcloak rebellion and reunite Skyrim by restoring Imperial control."

- Legate Rikke

This quest begins once the Battle for Whiterun has been completed for the Imperials.

Objectives

 * Report to General Tullius
 * Regain The Pale (unless won during "Season Unending")
 * Regain The Rift (unless won during "Season Unending") and/ or The Reach
 * Regain Winterhold (unless won during "Season Unending")
 * Regain Eastmarch

Walkthrough
Report to General Tullius in Solitude for a promotion and a reward for taking Whiterun. He will direct the Dragonborn to Legate Rikke to receive the next objective in taking Skyrim back from the Stormcloaks. After speaking with him, report to Legate Rikke at an Imperial camp. She will give objectives for each hold that must be taken, after which the Dragonborn must report back to Tullius, then return to Rikke at a new camp for the next objective. The first of these is A False Front.

Linked quests
The following quests are linked to Reunification of Skyrim:
 * A False Front
 * The Battle for Fort Dunstad
 * Compelling Tribute
 * The Battle for Fort Greenwall
 * Rescue from Fort Kastav
 * The Battle for Fort Amol
 * Battle for Windhelm

Regain Winterhold Hold

 * Legate Rikke will not give the quest "Rescue From Fort Kastav".
 * -Patch 1.6-Go to the nearby cooking spit and activate it, this should trigger the "Reporting for Duty" dialog option to appear.Works for PS3 and Xbox 360 but NOT on PC.
 * Reloading a previous save or saving and loading may also fix this problem.
 * If Markarth is given to Ulfric Stormcloak during Season Unending, clearing Fort Sungard from the Stormcloak army and then fast traveling to Rikke's camp will give the "Reporting for duty" dialog. Going through the rest of her dialog options might be necessary as well. Tested for after trying all possible fixes and it is confirmed that it works.
 * If Legate Rikke does not give "reporting for duty" option, try fast traveling into the camp when it'll be night time. For example, leave the camp. Then fast travel to it. If it is night time when you arrive, she will have the reporting for duty option. Confirmed.

Regain Eastmarch

 * Legate Rikke may not give the "reporting for duty" option.
 * Attacking Legate Rikke fixes the problem.
 * Using the cooking spit may also fix the issue.
 * Exiting the conversation with Legate Rikke and then re-initiating is another possible solution.
 * If Legate Rikke does not give "reporting for duty" option, try fast traveling into the camp when it'll be night time. For example, leave the camp. Then fast travel to it. If it is night time when you arrive, she will have the reporting for duty option. Confirmed.

Regain the Rift

 * When talking to Legate Rikke the "Reporting for Duty" dialog may not appear.
 * This can be fixed by going to Fort Greenwall and killing a few Stormcloaks. The Quest will start and the option "Reporting for duty" will reapear.
 * If Legate Rikke does not give "reporting for duty" option, try fast traveling into the camp when it'll be night time. For example, leave the camp. Then fast travel to it. If it is night time when you arrive, she will have the reporting for duty option. Confirmed.

Regain the Reach

 * If the Reach was given to the Stormcloaks during Season Unending, then it will be the Reach instead of the Rift. When talking to Legate Rikke, the "Reporting for Duty" dialog may not appear. This may be able to be fixed by using all three words of Unrelenting Force on Legate Rikke.
 * During the quest to retake Fort Sungard, the Imperials and Stormcloaks may not appear, leaving the fort empty.
 * If Legate Rikke does not give "reporting for duty" option, try fast traveling into the camp when it'll be night time. For example, leave the camp. Then fast travel to it. If it is night time when you arrive, she will have the reporting for duty option. Confirmed.

Die Wiedervereinigung von Himmelsrand Воссоединение Скайрима