Start the trainer, then start the Game and then Press F1 in the Main Menu.
Options:
Numpad 1: Money
Numpad 2: Max Squad
Numpad 3: Max Prestige
Codename Panzers: Cold War: Trainer (+9) [1.0] Free Download
Numpad 4: Unlimited Troops
Numpad 5: Top Quality Units
Numpad 6: Weaken Units
Numpad 7: Increase Experience
Numpad 8: Super Ammo
Numpad 9: Run Out Ammo
Have a good game!!!