Command & Conquer: Red Alert 2 Tips

Easy Spy infiltration
This trick helps to keep your spy from being detected by other human players. Most people can tell a unit is a spy (if the spy is disguised as one of theirs)by clicking on it and getting no response. This can be overcome by disguising your spy as a civilian or a cow. This trick was much better if an indirect path is taken, and you walk in short bursts. Enjoy