Pinkie Pie Says Goodnight: Sleepless

That's what I mean but I more so meant his mentality. I would think he would have a soldier's mentality which is purely practical. You do this because it's the best solution and the moral implications is not something a soldier thinks about. If his superior tells him to massacre innocent civilians he will do so. In combat after all any hesitation or questioning of orders will lead to the army getting killed in the field so obedience has to be immediate and absolute. The commander doesn't have the time to carefully discuss everything with his soldiers and in war there often isn't a right thing to do as you don't have all the information. The commander just has to make a decision and go for it as not deciding is always wrong.
It would fit him and that absolute and ruthless mentality would be balanced out by his wife who would keep a sense of humanity and mercy to their joint rulership. Cadance would be his moral compass and they would compliment each other. Him being short sentenced and efficient and she being diplomatic and charismatic. Cadance would also rely on him to balance her so that she doesn't get too merciful or inefficient. Criminals have to be punished and you sometimes have to be somewhat rude to ponies to get stuff done in a reasonable time.