This command will switch the country you are playing as to the country with the specified country tag.
The syntax for the tag command is as follows:
tag [country tag]
This command has the following arguments:
|Country Tag||The 3 letter country tag of the country you wish to play as. E.g. GER for Germany, ENG for England.|
Find below working examples of the tag command.
Austria-Hungary's country tag is KUK. This command would switch the country you are playing as to Austria-Hungary.
SPA is the country tag for Spain, typing this command into the console would make you play as Spain.