This command adds the specified amount of experience (to all experiences: army XP, naval XP and air XP).
xp [amount]
| Amount | The amount of army, air and naval experience you wish to credit yourself with. |
xp 100
Executing the above command would add 100 army XP, 100 naval XP and 100 air XP to your current country.
xp -200
Executing the above command would remove 200 army XP, 200 naval XP and 200 air XP from your current country (as a negative number is specified).