A Battery Shelled, by Percy Wyndham Lewis; A Battery Shelled, 1919, by Percy Wyndham Lewis. Wyndham Lewis was one of the most avant-garde British artists commissioned for the Hall of Remembrance. He was a founding member of the Vorticist group, an artistic and literary movement that celebrated the energy and violence of the modern machine age. Inspired by his experiences on the Western Front, A Battery Shelled depicts the effects of counter-battery artillery fire.