A slash of Blue — Battlefield

A battlefield of Civil War is depicted in various colors of uniform, wound, and cannon fire.

A slash of Blue－¹
A sweep of Gray－
Some scarlet patches on the way,
Compose an Evening Sky－
A little purple－slipped between－⁵
Some Ruby Trousers hurried on－
A Wave of Gold－
A Bank of Day－
This just makes out the Morning Sky.

(F.233/J.204)

[1] slash of Blue:: uniform color of Union soldiers.
[2] sweep of Gray:: uniform color of Confederate soldiers.
[3] scarlet patches:: bandages.
[4] Evening Sky:: end of a day's battle.
[5] Purple:: color of the blood dried, after one night.
[6] Ruby Trousers:: bleeding again in the next morning.
[7] Wave of Gold:: a wave of cannon fires.
[8] Bank of Day:: a decisive day to take or hold an embankment.
[9] the Morning Sky:: a battlefield in the morning filled with those colors.