There were many Parademons following Kalibak, but not enough—perhaps several million. Yet spread across major cities around the world, each city only got a few tens of thousands.
Moreover, humanity's heavy weapons could harm Parademons. At last, it was time for ordinary human armies to shine. Before those things even landed, they had already been plowed through by a wave of missiles. Once they reached the ground, they faced artillery of every caliber and high-yield bombs.
Parademons were not purely carbon-based lifeforms. They were monsters subjected to Mechanical Modification. This meant they possessed the advantages of both carbon-based organisms and mechanical life, but also the weaknesses of both.
Human artillery was far too primitive compared to Darkseid's technology to destroy the mechanical components on Parademons. But their flesh, like that of humans, was carbon-based. And no carbon-based creature could withstand temperatures of thousands of degrees or massive explosions.
The instant Kalibak appeared, countless orders were issued from the Presidential Palace. Of course, Schiller was not the one doing this—Batman was the true Master at deploying troops. He mobilized the military and sealed off major cities along the East Coast and West Coast, continuously using artillery and missiles to force the Parademons to land in the central states.
There was no other choice. The interior regions of the United States were relatively sparsely populated, and their cities were less developed, leaving plenty of room to suppress the Parademons with firepower. Those national parks and farms usually had few people around anyway; if they were blown up, they were blown up. But if the Parademons landed on the East Coast or West Coast, destroying any office building could mean hundreds or thousands of deaths. Without large-scale firepower, they could only fight street battles, where humanity had no advantage whatsoever.
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