Command & Conquer: Red Alert 2 Tips

Keep the grand cannon ready
If you are playing as france, and using the grand cannon, you will no doubt know that the cannon has a horrendously slow turning speed, so if there is an enemy that is not in its line of sight, it will have to spend several seconds rotating to fire at the target. So, if you know where your enemy usually comes from (or the only place they come from), select your grand cannon, hold down the ctrl button, and click on open ground in the direction where the enemies come from. This will make the cannon rotate and fire in that direction so that when the enemies do come, you wont waste those precious seconds on rotating. Once the cannon starts firing, issue the stop command and it will stop firing, but remain in its position.