Trainers are intended for the Campaign mode . Attempting to use them in multiplayer will likely result in a ban from anti-cheat systems. The Built-In Alternative: Console Commands
Increases your weapon damage significantly, allowing you to down any enemy with a single shot. How to Use a Trainer Safely call of duty 1 trainer unlimited health and ammo
Ensures every bullet hits exactly where your crosshair is aimed. Trainers are intended for the Campaign mode