Leading the Patrol Cavalry, as Fang Hong described, were indeed the Dark Knights from the Shadow Throne, draped in black and red battle robes. They had already seen the gray-clad people's formation in the square and realized the defenses were not yet set, causing them to be overjoyed.
"The flanking tactic worked!"
"They haven't spotted us!"
"Cut the chatter, prepare to attack!" shouted the lead knight, leveling his lance to prepare for a charge.
Unlike the City Defense Force's Light Cavalry, the Invokers were genuine Heavy Cavalry, and wall-style charges were one of the classic cavalry tactics brought by Earthlings over the past half-century.
Just as the warhorses began to accelerate, suddenly, a cracking sound echoed, and an Ice Wall rose straight up from the long street. The Dark Knights only then noticed that behind the gray-clad people stood row upon row of Elementalists and Magic Guided Conductors.