Instead of USA Main Menu. You will instead have GLA Main Menu, where instead of USA units, you see GLA units protecting the region. So GLA units will defend off USA and China now. Might be good, if you are starting with GLA Campaign? This is the second shell map mod for steam workshop. If this gets enough feedback, i'll consider making New USA one also :)
If you dont see GLA units on main menu, then make sure you have Maps folder in Command & Conquer Generals.
Also make sure the Shell map is inside the Maps folder, otherwise it will default to USA shell map.
Steps to take, if you still have USA Main Menu, since it adds some random numbers and letters to the file :
1. Open the game directory `SteamLibrary\steamapps\common\Command and Conquer Generals\` in an explorer.
2. Create a new folder named `Maps` in the game directory, then create a new folder named `ShellMap1` in `Maps` directory.
3. Open the workshop directory `SteamLibrary\steamapps\workshop\` in another explorer, and search for file `ShellMap1.map` using the search bar. The result might be something like `JM5xyi4S_ShellMap1.map`.
4. Copy the map file you found to `ShellMap1` folder you created earlier, then rename the copy as `ShellMap1.map`.
5. Start the game and you'll see GLA units on the main menu.
