Honestly, Rocks would enter the headquarters and kill all the generals easily!
It’s not hard for a character who cuts mountains and islands, has reflexes faster than the speed of light, and durability to fight Harald and Edward to do that.
Atomic bombs wouldn’t get through the fictional energy (adcoc). And why are we even discussing nuclear bombs as if they could just be used like that? Xebec would invade the White House easily and kill everyone.