an Entity references as follows:
Otto Gleichmann (20 August 1887, in Mainz – 2 November 1963, in Hannover) was a key figure in German expressionism. He produced oil paintings, watercolor paintings, sketches, lithographs and pictures in mixed media. His works from the 1920s and 1930s were characterised by his bad experiences as a soldier (1915) and his injuries (1916) during the First World War - and his belief that the growth of National Socialism was a bad thing.