In six weeks on the Western Front, Nash completed what he called "fifty drawings of muddy places". When he returned to England, he started to develop these drawings into finished pieces and began working flat-out to have enough pictures ready for a one-man show in May 1918. While in Flanders Nash had mostly worked in pen-and-ink, often over painted in watercolours, but in England he learnt, from Nevinson, to produce lithographs. The 1917 drawing "Nightfall, Zillebecke District" showing soldiers walking along a zig-zagging duckboard became the 1918 lithograph "Rain". "After the Battle" shows a battlefield, deserted save for some corpses sinking into the mud. "The Landscape – Hill 60" shows fields of mud and shellholes with explosions filling the sky above. One of the largest and most powerful new drawings was "Wire", originally titled "Wire-The Hindenburg Line" and again uses the destruction of nature, in the form of a tree trunk wrapped in barbed wire, akin to a crown of thorns, to represent the catastrophe of war.