Their barricade against the sky

Their Barricade against the Sky
The martial Trees withdraw,
And with a Flag at every turn
Their Armies are no more -

What Russet Halts in Nature's March
They indicate or cause,
An inference of Mexico
Effaces the Surmise -

Recurrent to the After Thought
That Massacre of Air -
The Wound that was not Wound nor Scar,
But Holidays of War -