Carl Sandburg —Army Veteran, War Correspondent, Sentimentalist, Socialist, Populist, Globalist, Novelist, Biographer, and Poet. A man of so many parts it's probably impossible to list them all. No doubt he was deeply affected by the First World War. For a lot of Americans (as Sherwood Anderson wrote) "among all the poets of America he is my poet." Here are two representative poems (I think) from his First World War period. Additions and opinions welcome in the comments section.
A. E. F.
There will be a rusty gun on the wall, sweetheart,
The rifle grooves curling with flakes of rust.
A spider will make a silver string nest in the darkest, warmest corner of it.
The trigger and the range-finder, they too will be rusty.
And so hands will polish the gun, and it will hang on the wall.
Forefingers and thumbs will point absently and casually toward it.
It will be spoken among half-forgotten, wished-to-be-forgotten things.
They will tell the spider: Go on, you're doing good work.
ButtonsI HAVE been watching the war map slammed up for
advertising in front of the newspaper office.
Buttons–red and yellow buttons–blue and black buttons–
are shoved back and forth across the map.
A laughing young man, sunny with freckles,
Climbs a ladder, yells a joke to somebody in the crowd,
And then fixes a yellow button one inch west
And follows the yellow button with a black button one
(Ten thousand men and boys twist on their bodies in
a red soak along a river edge,
Gasping of wounds, calling for water, some rattling
death in their throats.)
Who would guess what it cost to move two buttons one
inch on the war map here in front of the newspaper
office where the freckle-faced young man is laughing
~ Carl Sandburg
Source: Smoke and Steel, 1920