Side story: The current SS rank mercs
Arthur Glory: SS rank merc of the Southern Union.
Arthur Glory was a young lad when he became a merc. The time he became one was back when the Southern Union wasn't the Southern Union, but still different smaller countries at war with each other.
At the time, Arthur Glory wanted to avenge his father's death. His father was a soldier, and his only living relative. Yet due to the war his father's life was taken. Arthur being too young to train and become a soldier, instead became a mercenary, which allowed anyone of any age to register as long as they could hold a gun and shoot they were allowed to be a mercenary.
Arthur had no talent in using guns or any sort of firearms, he was also unable to use melee weapons such as swords and spears well enough to defend himself. The only reason he survived for so long was because of sheer luck.