Wrong board.
I forget the units and such (it's been years since I've played a C&C game), but I do remember that it was in that game that I adopted my defensive tactics.
Basically I would produce ten and a half tons of easily replaceable units and set them to guard whatever I wanted and then just keep cranking them out until I can bring in heavy hitters to relieve them, wait for an attack, then counter attack and use superior numbers to my advantage.