Even as the Goblin Wyvern Knights were doing their best to break down the bomber planes, they realised the numbers were only growing. With each plane they shot down, another two more emerged from afar.
And to make things worse, the bomber planes were kamikazing, throwing themselves at Jin's Army as much as their planes could take. Demon Rats were also seen to be strapped with explosives and bombs that were heavier than their weight so that they could use a booster to make themselves akin to guided missiles.
The only difference from the concept of guided missiles was that the Demon Rats were sacrificing themselves to make sure the explosives get to where they were going, to destroy as much as the zombie horde as they could. For the armoured vehicles that were driven by the Dark Templars, most of them were able to continue to charge forward to the city centre