Hi, friend.

As a WAR tank, this is your opener: http://ffxivrotations.com/1c5y

This is a high enmity opener, while lining up your burst damage at the start of your pull.

Right now WAR places things on CD. Your Infuriate should be on CD 100% of the time so that you can Fell Cleave at will. For the most part, I only use Onslaught to shorten distances and as a GCD during Inner Release window. Upheavel should also be on CD. Make sure you keep Storm's Eye up as well.

Stance dancing isn't 100% necessary. If you need to go back into Defiance, then it should be done when you're aware of a high burst damage coming towards you. Popping Unchained and using Steel Cyclone (For AOE heals) or Inner Beast (for a solid heal) is fairly recommended.

Otherwise, you should be mitigating damage. Review Warrior's kit for mitigation abilities. We've a lot of it.

I have noticed that if I go into Defiance while Unchained is off CD, my damage doesn't suffer a huge hit.