From 26th October 2016 to 6th March 2017 Tate Britain showed a major exhibition of the surrealist and war painter, Paul Nash.   
http://www.tate.org.uk/whats-on/tate-britain/exhibition/paul-nash
​The exhibition showed his paintings of trees and gardens at dusk, very atmospheric, then his more surreal and symbolic work, and then the famous war paintings. The latter includes the well-known Totes Meer (Dead Sea) 1940-41, showing the pieces of shot down German plans at a dump near Oxford, looking like the waves of the sea.  
http://www.tate.org.uk/art/artists/paul-nash-1690