Defense of the Empire of Henniswyyr
Half-Orcs are descended from the Orcs that attempted to invade Henniswyyr during the oppressive life of Ohrssus the Dragon God. They had gained lands in all kingdoms, but were eventually pushed back into the Northerlands, where they were left alone as no dragons lived in that area and no one else intended to make a kingdom out of it. The Orcs began to bed each other and their human, dwarven, and Elven slaves and though they could bed them all, only the Humans and Elves could make it to term, though only the children of Elves could survive in the cold and survive the society of the Orcs. In the dark times immediately following Dragon Wars they would use the killing of a Dragon as a coming of age ceremony for young Half Orcs. The process of finding and killing a Dragon now is so long and difficult that it is no longer used as a coming of age ritual. Most Half-Orcs would be near elders by the time they managed to find even one. So now the arena in the castle for the Northerlands is used as their rite of passage.