Lost 300 Heavy Artillery to NO DEFENSE??? (White Giant)

"Your attack has been launched. The target is for 27.8 % damaged. On the side of The Empire of Birga Hi there were 100 casualties and 129 civilians were wounded. Elrona is very severely damaged. On the The Empire of Birga Hi side no weapon losses were reported. The unit LRD 02 of ASCE lost 300 heavy artillery. The attack may have been reduced or eliminated by Anti Missile Missiles. LRD 02 lost 1 or more trucks, gasoline and military supplies. ASCE lost 170 soldiers and 448 were wounded. The Empire of Birga Hi defense was assisted by the White Mountain unit."

I checked the target before attack and it was not defended, but I lost 300 heavy artillery..?

This is the second time...

Check for a small heli defence, prolly a forgotten or reinforced def heli squad that is messing with ya.

All air defense is destroyed, only some land units...

Well, I lost all my heavy artillery on targets with no defense, so that was my first C3 failure, nice.

You were right, 320 heli´s I forgot...

Sucks

yeah, that white mountain unit gets everywhere, b'stard.