Arknights: Dawn of the Sarkaz

[Farming, No Female Lead, Self-Indulgent Story] (The work's tags have been stuffed with a whole bunch of nonsense by AI, so ignore them. I recommend starting from Volume Two.) Tang Ren is unexpectedly forced into service by the emperor and transmigrates, but... what Terra is this? And what do you mean the Sarkaz Twin Kings defeated the Allied Forces? Gaul won the Four Emperors' Battle? What is all this nonsense! Why are you demi-humans so awful? The author is a Warhammer fan, so there will be lots of Warhammer elements. I'm a student, so please forgive the limited writing.