I can't recommend doing rotations because Tanks are much more of a prediction/reaction job than an upkeep job. Having the perfect rotation to have a buff up 100% of the time is not really going to do better than learning each enemy's pattern or your own groups quirks. Doing a rotation will end with you "wasting" cd's and not having them up when you really need them.

The basic Idea should be splitting your CD's via timers/efficacy. Pop the lesser cooldowns often, and the big guns on stuff that hurts or when you are in danger. On WAR, your lesser cooldowns are: Foresight, Fleetfoot, Awareness, Bloodbath and Convalescence. Your big guns are Vengeance and Thrill of battle.

IB is an exception. If the enemy has an easily-predicted attack, you should time it with it. If it doesn't, just spam it as soon as it's available. Keep Storm's Path up all the time.