A commander is able to direct his troops in battle, enabling them to fight the best that they can.
Combat Focus I
You gain a command aura of your choice. Your command aura has a +1 bonus.
Combat Focus II
At 5th level, you gain a second command aura of your choice. You may only have one command aura active at a time.
Combat Focus III
At 9th level, you gain a third command aura, and your aura bonus increases to +2.
Combat Focus IV
When you reach 13th level, you gain a fourth command aura.
Combat Focus V
When you reach 17th level, you gain a fifth command aura, and your aura bonus increases to +3.