The Demon Conquest (2)
Not only that, but many of them saw the human Gold-Tier Professionals who were waiting to restrain the Gold-Tier Professionals of the Demonkins. Surprisingly, the Human Brotherhood was able to muster some good numbers of the Gold-Tier Professionals on their own, which was something most unusual, but considering the amount of Genetic Strengthening Serum that they had at their disposal and they were in a situation where their destruction was all but imminent it wasn't that shocking.
Naturally, the bombardment from the human position was getting only more and more fierce as the humans were activating more and more of the artillery batteries that they got from the Avalon Kingdom, and they indeed proved their worth on the battlefield as they reaped the lives of the more unfortunate demonkin soldiers.