WAR doesn't have much to monitor in terms of your own, it's more about monitoring the debuff that you have applied on the target. Since WAR has no procs, you can use them to monitor your few defensive CDs and that's really about it. Best I can think of is to monitor your Inner Beast availability so you know when it's up and can use it as much as possible to mitigate damage instead of having the 5 stacks Wrath just sit there.