If you've downloaded the Updater since June 30, 2017, simply run it to make sure your game is up to date!
Otherwise, download and run the Updater and your game will be ready to play! Unless we release a new version of the Updater (which will happen occasionally before large patches), you should only need to download this once!
The current version is 1.0.9h, released January 4, 2018. For the complete Wars of Liberty changelog, click here.