In Skirmish mode, click the "Enable Cheats" in the config box next to the how many players you want in. For the codes to work, you need to press enter while in a skirmish game and when you need parenthesis for a cheat, you need to add them.
|cheat_requisition (number)||Number of requisition|
|cheat_power (number)||Number of power|
|cls||clears console window|
|quit||Quit to Windows|