[@Dog] I like it for the most part. I would just ask you edit the command of regiments down to perhaps a company. He could have fought in those battles and gotten a reputation like you said.

Then you can add at the end how over the next decade or so he became a sort of mercenary for the land of Roh after retirement. There he was met by the adventurer Cicero Bladewalker who joined him and a band of other men to put down any illegal demonfolk activity within the region. Though the main armies were defeated, they still resisted the Kingdom of Roh. 

There they came to know one another over the coming years, fighting together. Cicero gained some nasty scars and perhaps they both learned different fighting styles from one another. 

In a particularly nasty battle, they managed to survive a deadly ambush of demonfolk, but were the only two to survive out of a group of 15 or so. 

Cicero left after that back home to Alvion, but they were connected through their service. You can decide whether or not he continued his crusade or found a different occupation.