Answer:
I follow the orders of only two. I respect the work of only two. I am in constant battles with many, Though one surpassed them all. With forces joined, We created hell, Until our mutual enemy fell. Who am I?
What word starts with 'E', ends with 'E', but only has one letter? It is not the letter 'E'.
What can be filled with empty hands?
What has to be broken before it can be used?
Though blind as well, can lead the blind well.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?