Trainers are designed for single-player skirmish mode or the official storyline campaigns.
Here is the reality:
The Ultimate Guide to the Red Alert 2: Yuri’s Revenge Trainer (+54 v1.001) red alert 2 yuris revenge trainer 1001 54
Instantly promote units to Elite (3-star) status. How to Use the Trainer Safely
: Instantly upgrading every unit to "Elite" status the moment they were selected or built. Trainers are designed for single-player skirmish mode or
: The trainer eliminated the need for Slave Miners or Ore Purifiers . Commanders would start with "99,999,999" credits, allowing them to build an impenetrable wall of Psychic Towers before the enemy even deployed their Construction Yard.
: Advanced cheat tables and trainers are often maintained and discussed on forums like FearLess Cheat Engine . Usage & Safety : The trainer eliminated the need for Slave
: Clears the "fog of war" so you can see the entire battlefield and track enemy movements.
Command and Conquer: Red Alert 2 - Yuri's Revenge Trainer 1001 54: The Ultimate Guide
Let's address the elephant in the room. Trainers, by their nature, inject code into other processes. Antivirus (AV) software hates this.