The decisive battle between the human race and the Devil Race over the enormous Earth Element Crystal vein discovered within the core ring of Iron Enclosure Mountain had already lasted for nearly a year.
This super-sized Earth Element Crystal vein had been discovered by the Devil Race. The human race arrived afterward, and the two sides began fighting over it.
Within the First Abyss, where the knights of both sides had long been interlocked like dogs' teeth, any major move by one side could hardly be kept completely hidden from the other. The resources and manpower required for the Devil Race to mine the Earth Element Crystal vein on such a massive scale could not possibly appear out of thin air. The transfer and movement of those resources and personnel naturally drew the human race's close attention, prompting tit-for-tat countermeasures.
What was called a Holy War was, in a sense, nothing more than a century or more of reckless, tit-for-tat fighting in every corner. Given enough time, it became a Holy War.
Older knights all knew that a Holy War was ground out.
The human race and the Devil Race were like the two sides of a millstone, pressed heavily together and turning in opposite directions, each seeking to grind the other to dust. Facing one another on those two millstones were each side's strongest warriors. Whenever the two sides of the millstone turned by the slightest fraction, countless warriors were reduced to powder.
The first large-scale knight battle between the human race and the Devil Race in the Third Holy War—the first violent collision between the hardest parts of those two millstones—took place at Iron Enclosure Mountain in the First Abyss of the Earth Element Realm.
On March 27th, Black Iron Calendar 903, several days after leaving the