Answer:
Soldiers line up spaced with pride. Two long rows lined side by side. One sole unit can decide, if the rows will unite or divide.
What do you have when you're sitting down that you don't have when you're standing up?
A serpent swam in a silver urn, A golden bird did in its mouth abide, The serpent drank the water, this in turn, Killed the serpent. Then the gold bird died.
How far will a blind dog walk into a forest?
Some live in me, some live on. And some shave me to stride upon. I rarely leave my native land. Until my death I always stand. High and low I may be found. Both above and below ground.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?