The First World War, which was fought between 1914 and 1918, had an immediate impact on popular culture. In over the hundred years since the war ended, the war has resulted in many artistic and cultural works from all sides and nations that participated in the war. This included artworks, books, poems, films, television, music, and more recently, video games. Many of these pieces were created by soldiers who took part in the war. The years of warfare were the backdrop for art which is now preserved and displayed in such institutions as the Imperial War Museum in London, the Canadian War Museum in Ottawa, and the Australian War Memorial in Canberra. Official war artists were commissioned by the British Ministry of Information and the authorities of other countries. After 1914, avant-garde artists began to consider and investigate many things that had once seemed unimaginable. As Marc Chagall later remarked, "The war was another plastic work that totally absorbed us, which reformed our forms, destroyed the lines, and gave a new look to the universe." In this same period, academic and realist artists continued to produce new work. Traditional artists and their artwork developed side by side with the shock of the new as culture reinvented itself in relationships with new technologies. Some artists responded positively to the changes wrought by war. C. R. W. Nevinson, associated with the Futurists, wrote that "This war will be a violent incentive to Futurism, for we believe there is no beauty except in strife, and no masterpiece without aggressiveness." His fellow artist Walter Sickert wrote that Nevinson's painting La Mitrailleuse (now in the Tate collection) 'will probably remain the most authoritative and concentrated utterance on the war in the history of painting.' Pacifist artists also responded to the war in powerful ways: Mark Gertler's major painting, Merry-Go-Round, was created in the midst of the war years and was described by D. H. Lawrence as "the best modern picture I have seen" and depicts the war as a futile and mechanistic nightmare.