"Keep a few Chrono Legionnaires in your base.  If a nuke is sent your way, attack your Construction Yard and other critical buildings with the Legionnaires.  They will be destroyed but your structures will survive." - TEM

"If you are playing as the Soviets, make sure you keep plenty of Dogs around your base.  They are cheap to create and will keep those pesky Spies away." - TEM

"if you need room for buildings and there are trees in the way hold ctrl on the keyboard and attack it" - toy machine