Command & Conquer: Red Alert 2 Tips

Complete Radiation!
If you are playing as Iraq and you have a desolater go to the area you want to render completely radiated. Press D to cause the desolater to poison the area. While he is "deployed" hold Ctrl and click on the ground near him. He will continually fire the radiation into the ground, keeping the ground poisonous for as long as he stays there. Also, if you let him poison the ground for a few minutes the ground will remain permanently uninhabitable. You will then be able to move your desolater.