First of all if im not mistaken stune effect on mobb reduces aggro made on it when attacked, so take that into consideration, if its dps pepl dischargin som aoe just after you charged.Second thing is when thers no stun, i pop shield block to get extra rage and spam cleave.Ofc SS is a heavy aggro thing so i alt tab to see if someone is gainin on me and ss that target.Vigilance on mages and other aoe clases help ofc, and im keping CB if thers som mob goin to get lose, taunt if they run etc.
Thats more for 5 mans, now 10 mans well wars are not aoe tanks.For example at freya trash thers a pack with em flowers, 1 big rest small, me war is always taunting the big one, while other tank pally gets them loads of small ones.T-clap/cleave/SW just wont do it with 4K pepl aoe, not on so many targets, so its class, warr cant match pally on aoe, but wars do excel on 1 target aggro.
I gliphed for +5% aggro from vigilance and it does helps but not that much.
And last thing i use HS and cleave quite often, based on situation, to make it easyr i bound it to mouse wheel so i dont break my fingers
Thats just my opinion, corect me if im wrong