Protection Warriors were the first tanking class and are one of the five PvE main tank combinations of class and spec in WoW. The other four are Guardian Druids, Protection Paladins, Blood Death Knights, and Brewmaster Monks. Protection Warriors are probably the most versatile tanks, they have high damage avoidance and a large array of auxiliary abilities which is balanced by having the lowest hitpoints of any tank class. Warrior tanks usually create a little less aggro initially than paladin and druid tanks.