Waves of light orange bullets moved at high speed until they could be seen as mere lines of light, traveling through the air, hitting the vanguard of demons, falling to death when it was hit by the light orange. This time, the Army was no longer careless anymore with unlimited ammunition, hundreds of millions of reserve rounds, ready to be replaced if damaged of all the kit. Such dense bullets, even flies, would be difficult to get through to this place.
Not only this, both the cannons that support the firing and air-to-ground attacks of fighter planes. Not a single demon can cross the border or get closer to this place.
"The devil's tactics are out of date." Major General Song Zihua saw the methods used by the demons. It is not that different from human wave strategies that rely on larger numbers to trade.