Bring your Goliaths out first, followed by your tanks. Put the tanks in Siege mode and set the Goliaths to hold position in front of the tanks.
Step2
Watch as your enemy crumbles before you!
Step3
Build a few extra Goliaths and tanks so that you can have replacements ready to fill gaps in your units.
Step4
Use your Wraiths to provide air support and catch any trouble units before they hit your troops.
Step5
Work your way north, clear out the first line, then push northeast. This is the main base. If you can cripple this quickly, the rest of the Confederate forces will just give up.
Step6
Use your Goliaths and tanks to mop up any remaining Confederate forces or buildings.
Step7
Bask in the sweet glow of victory!
Tips & Warnings
There are two rows of missile turrets on each side of the initial line of defense. The one on the western side keeps you from skirting around the defense. The one on the eastern side prevents you from rolling air units straight into the Confederate main base. The Yamato cannon on the Norad II can dispense with all of these, but grounds units are more efficient. The Norad II can only destroy two cannons before needing time to recharge.