I think you should give it to infantry general just for a decent Anti-Tank tank. Like a Tank-destroyer unit.
Infantry general does need a tank, I mean if Air gen can get a tank why should Infantry gen be any different? However, it shouldnt be very strong, stronger than a Scorpion tank but weaker then a Battlemaster should do, also why should it be an anti tank weapon when he already has the ATGM trooper which can one-hit KO anything weaker than a Warmaster?