Answer:
Soldiers fight it but never changes.
What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?
How do you spell hard water with only three letters?
Mountains will crumble and temples will fall, and no man can survive its endless call. What is it?
The line a runner strives to reach
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?