The Fool left the airship base of the Crystal Battle Fortress beneath bright, warm sunlight, steadily climbing higher. Just over ten minutes later, when the airship base of the Crystal Battle Fortress on the ground had shrunk smaller than ants, the Fool had already risen to an altitude of 7 kilometers and was more than 50 kilometers away from the Crystal Battle Fortress.
At that distance, they had entered the contested zone between both sides in the Selnes War Zone. They could encounter Winged Devils at any moment, and all the crew aboard the Fool had entered combat readiness.
At this altitude, they were nearly at the Gale-class airship's maximum hovering altitude of 8 kilometers. From here, they could easily see the exposed black coal-mining areas scattered across the Selnes Plains, as well as the unbroken human defensive line formed by trenches and battle fortresses on the ground to the south of the war zone.
Beneath the entire Selnes Plains lay high-quality anthracite coal. The Allied Human Forces had chosen this place as the first defensive line to intercept the Devil Race legions not only because the terrain suited the deployment of human mechanized forces, but more importantly because the Selnes Plains could reduce the logistical burden on the human legions to its absolute minimum.
No matter where they were, as long as a few people dug into the ground, they could obtain extremely high-quality anthracite. This coal could provide an endless supply of power for human battle fortresses, tanks, all kinds of vehicles, and even airships.
Looking at those black coal-mining zones on the plains, like scars, Zhang Tie immediately understood the intentions of the Allied Human Forces' upper command. So it seemed that the saying "height determines one's view" truly made sense.
But at this moment, Zhang Tie