The force field giant shield was exceptionally strong and indestructible, dragging armored vehicles carrying mortars, steam tanks, and even the Empire's army behind the giant armor, escaping the bombardment of the Thracian defenders.
But the dragon group and airships in the sky were not so lucky; vast numbers of bipedal wyverns were engulfed by flames, and some airships turned into massive fireballs, rapidly plummeting toward the ground, finally exploding with a boom.
Arturo raised his longsword, roaring angrily, "All troops, heed my command—fire! Blow open the Thracians' tortoise shell for me!"
Instantly, the barrels of the mortars and steam tanks were raised simultaneously, bursting forth with brilliant fire and endless smoke from their muzzles.
"Boom—"
Each terrifying shell struck the light screen, and the powerful shockwave caused the city walls to shake again, with several soldiers falling with wails.
