I'm thinking it would be a good idea (especially becasue of Assassins since they are in the frontlines of the battle, but also for Generals because they would be albe to see where to send the next wave of their forces to fend off enemies) for there to be a mini map in one of the corners, or accessible by an in-game menu, so you can see where the enemy forces are attacking from and how close they are to your castle and portals(the things that send your reinforcements). This way one is still able to be in the frontlines and doesn't have to deal with the hastle of constantly having to return to one's castle and protals to check up on things.
For the mini map the different commands can be posted as red vs. blue or something simple like that....Just an idea.