The GDI Defense Facility
Next to the Construction Yard, the Defense Facility is the most important base structure. It is responsible for rebuilding your base during and after a raid. There
is a halt before you can start rebuilding your base so if your opponent
runs out of CP, wait a few minutes and you will be able to repair. The
same is true if you take our your attacker's base before they take yours out first. You can use another base to attack your assailant, try and do'em in in one hit. Taking out this structure means you cannot repair your defense units. This structure will need to be repaired if it was heavily damaged. It's not an impossible task, it just demands a lot of focus and have an excellent timing.Keep in mind to keep this unit equal or higher than you defense structures as you might not get the full 70% repair after an attack. The game has it that after an attack, you base will auto-repair immediately after the attack. If you Repair Facility is left unscathed, it will repair 70% but if it got damaged down to 50% let's say, you will only repair 35%.
