For reference (or on the off chance anyone cares to see where I got them from):
1.
"I Have a Rendezvous with Death," Alan Seeger.
2.
"Innominatus (Breathes There the Man?)," Sir Walter Scott.
3.
"Old Ironsides," Oliver Wendell Holmes, Sr.
4.
"The Men Behind the Guns," John Jerome Rooney.
The Best-Loved Poems of the American People, Chapter "Patriotism & War," selected/compiled by Hazel Felleman.