We cannot mount a great attack
Unless we somehow reach the back
We have a unique travel style
Sir, may I ride with you awhile?
We don't get in each other's way
Since on our own colour we stay
We start the clash on either side
Beware, our reach is far and wide
Her varied moves make her scary
All around her should be wary
Most important among the crew
If he falls, your struggle is through
What are we?