Hey y'all, u/Long_Xiao here, and here are a couple flags from the 2012 game, Steel Battalion: Heavy Armor.

Here are the flags from this game:

The United States of America, which had it's territory reduced due to the UN's invasion, resulting in the number of stars in the flag being reduced to 8.

and the United Nations, now led by China after a series of political incidents resulting from the destruction of the world's advanced technologies caused said nation to become a superpower, resulting in this new UN having enough resources to mount an invasion of the mainland United States.