MoonSong
Rules-lawyering drama queen but not a munchkin
There really needs to be some action economy cost for the character taking the action as well as the warlord. If there isn't you get absurd scenarios with a 'party' of one puissant archer and X warlords; by the end of round 1 the archer has unleashed a waggonload of arrows (as each warlord gives the archer an action) and lain waste to the enemy army...
Yeah, pretty extreme. But nothing really limits something along the lines of "you can use your action to grant an ally a free attack against an enemy, each ally can only benefit from this ability once per round. At higher levels you can grant a free attack to two allies" (you know the same limit they put in 4e, no matter how many warlords you had, each ally could only be commanded to attack once each round).