If you hate Thalmor like all right minded Skyrim Players, here is a mod for you. Assault Valenwood He ends the treaty between the Great Superiors and the Empire, and allows you to join the Imperial Legion in a war for Valenwood County. Some local timber dwarves and Khajites will also support you as the county recaptures city by city.
It builds on the previous one Fallwood Department of Defense, By taking that huge map and adding a series of battles across it. Note that you don’t need the original mod to use this version, although you’ll need Skyrim Special Edition 1.5.73 or higher, and as the modder theblackfist warns, “a bunch of followers to help you and your allies” and “a lot of doses.”
To begin the attack on Valenwood, travel to the Solitude docks and find a ship called The Avenger. Find and open the trap door on board and enjoy your time in the imperial navy.