Yep, this is a gift for SteelClaw675 of his ponysona going for mercernary of the Royal Guard to Guard Captain. And since Princess Luna required more protection since Shining Armor couldn't be there because of princess Cadance caring for her foals, he was asked to take charge of the Royal Guard for him. He accepted the honir of being Guard Captain and still holds that position to this day.
By the way, the owner of this pony has my permission to digitize and color it.