Answer:
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
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.
It stands upright and can be quite grand. Its secret is not hidden but right at hand. What is it?
Though blind as well, can lead the blind well.
What has 4 eyes but can’t see?
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.