It’s probably real.
If I’m not mistaken, Gustav is the first king. Dineru met him before in battlefield nearly 8 decades ago and they’re still more barbarian than now. So he did the reforms in less than a century. And rather than lustful, they’re more of glutton who need a lot of food. Other race are not afraid of being raped, they're afraid of getting eaten literally. One of the dark elves later commented on how the orcs have developed refrigeration spell and logistic system to distribute goods exactly because orcs need a lot of food. That combination allows them to produce and then deliver the food across their kingdom.
They’re militaristic country for sure.
This is from chapter 3,
After talking more to Gustav and seeing how the country operates, she realised the country itself is moved by military. All of Gustav’s closest aides are the members of General Staff HQ (a concept they adopted from human hero they faced during battle 6 decades ago). Meanwhile, their military complex are always ready for full scale war against the elves, and what would surely come after that, war with human kingdoms. Right now they have friendly relationship with human, but if war breaks out, they know they must be ready.
If I don’t misread, Gustav later told Dinerus that magic and physical strength barely count these days. It’s already the era of steel and gunpowder. Magic is integrated into technology in their world.
Nogami is one of those military-genre manga artists, especially world war era stuffs. Had drawn airplanes, tanks, warships, and flying loli in panties.
Mofo going all NAZI!!!!! when genocides like this happened all the time, and by the orcs' drip, they're clearly inspired by Prussia/Imperial Germany. Tell me when the Japanese had that pointy helmet the orc general wears.
They somehow saved 12k out of 20k people even though they came back like months later and the elves didnt seem to have any goal other than shooting dark elves in the face