A lot of people ask why we bother making multiple command groups instead of sculpting more troop types. Simply, I believe in diversity on the battle board. Troopers, soldiers, warriors, the bread and butter of an army, usually get variants enough to look good in units, but I hate to have just the same three/four guys directing every unit on the field. So we always try to sculpt several command groups with the idea that you can mix and match the different sets to make units that look unique.
Besides, you can use the odd artillery officer to give some more variance. I love this little guy that Angel sculpted for the ottomman artillery 😉