GeneralJohn J. Pershing authorized a duckboard shoulder patch for the units.
From the en.wikipedia.org
Despite a bit of duckboard here and a warm hut there, eight days in the wilds is not a walk in the park.
From the stuff.co.nz
In May 2010, only some overdue maintenance work was visible along with some early, short sections of new planking and duckboard.
From the stuff.co.nz
Gusts of wind blew us sideways, and less than two hours out, we faced a broad puddle of water, no duckboard, no stones, no branches.
From the post-gazette.com
More examples
A boardwalk laid across muddy ground
Duckboards are platform of wooden slats built over muddy ground to form a dry passageway.
One of a long series of boards laid as a path across wet or muddy ground; normally used in plural
(Duck-boards) floor sections made of wooden slats which can be laid on wet, muddy or cold surfaces.
(DUCKBOARDS) boards forming a track or floor over wet or muddy ground; as plank sidewalks (BANQUETTE) or palletized BUNKER floors. See GANGWAY, PASSAGEWAY.
(Duckboards) A board which was laid down on trench floors and flooded fields to help stop soldiers from sinking into the muddy ground.