Double-edged Sword

The thing about a double-edgèd sword
Well-known, a phrase for everyone to say
I hold the hilt, my mind en garde toward
The thing about the blade: it cuts both ways

Though every morn I’m sent up here to fight
It seems there ought to be another way
The enemy, the same as us by night
But only faceless foes by light of day

No Human nor a Horseman rules as lord
What chance these faces haunt me till the end?
The thing about a double-edgèd sword
It cuts both ways, and neither side can mend

And, cut both ways, now leaving all we’ve wrought
Destroyed, in names of those for whom we fought.

Whoa. This etymology does make more sense, but that’s not how the phrase is used today.

A part of Poem-a-Day 2013, the title given by one Christine S.