Open the game and load your desired campaign or scenario.
Press the designated key to open the cheat code input window (usually the tilde key ~).
Enter the desired cheat code exactly as specified (case-sensitive).
Press Enter to activate the cheat code and see the effects in-game.
Experiment with different codes for various advantages, such as resources or unit upgrades.
Save your game before using cheats to avoid unintended consequences.
I have ran into players that have every unit in the Inventory by middle of 1942. This is BS
UPDATE:
Sorry There are internet searches that show how to cheat in this game that are false. But they look real Enough.
The Cheat codes are knowing the Game and playing well.
My bad.