Their place is 50 feet in front of the main battle line to draw arrows, spells and lances.
That's the way things go in Dominions
Btw., keeping feebleminded 250-gold-mages as patrollers isn't really that cost effective. Or crippled HI with 2AP.
.. thinking about it .. wasn't "reduced micromanagement" advertised somewhere? If I have to check all my units for aging-induced disablities regularly, that does not sound like less MM to me ?!? Ok, they only age once every year, what is .. 12 turns? .. but still ..