Life
World War I
From 1914 to 1918, Ehmsen was stationed as a soldier in the First World War in France, Romania and Flanders. His impressions from the years 1918 to 1919 during the conflicts and the disintegration of the Bavarian Soviet Republic are reflected in many of his works.
1920s
In 1919, Ehmsen joined the November Group. In 1920, he applied for a residence permit at the Aliens Office at the Munich Police Headquarters[3] for Werefkin, Jawlensky, Helene Nesnakomoff and Andreas Jawlensky[4] which gave them the opportunity to dissolve their Munich flat.
On 24 March 1921, Ehmsen signed the guest book of Heinrich Kirchhoff [de] in Wiesbaden as a painter residing in Munich.
In the summer of 1921, Jawlensky rented Ehmsen's flat in Munich and from there visited Paul Klee, who was then living in Possenhofen on Lake Starnberg.[5]
After an extended trip in 1928 to Martigues in southern France[6] Ehmsen moved to Berlin in 1929.
1930s
In 1930, he became a member of the Kampfkomitee der Künstler und Geistesarbeiter in support of the Communist Party of Germany in the Reichstag elections. From 1932 to 1933, he stayed in the USSR, where he had an exhibition in Moscow and his works were bought by museums.
Until his arrest by the Gestapo on 18 October 1933, Ehmsen was an artistic employee at Junkers-Werke. Friedrich Peter Drömmers had arranged the job for him. During his imprisonment in the Columbia concentration camp in Berlin, his works were removed from all German museums. Although eight works were shown in the 1937 exhibition Degenerate Art[7] it came to be admitted to the Reich Chamber of Culture in 1939.[8]
After the Second World War
In 1945, Ehmsen – together with Karl Hofer – was one of the co-founders of the Berlin University of the Arts in Berlin-Charlottenburg, of which he was deputy director as well as head of the liberal arts department. Because of a declaration of solidarity for the Paris Congrès mondial des partisans pour la paix (World Peace Movement), he was dismissed in 1949. In 1950, Ehmsen became a full member of the Akademie der Künste der DDR and took over the master class for painting.