

Otto Dix (1891-1969) served during World War I and his paintings were deeply affected by the horrors he observed as a solider. Some of works were labeled and exhibited as degenerate; at least two were burnt in the 1930s, while Dix was banned from painting and dismissed from his post at the Dresden Arts Academy. Dix was conscripted to fight in World War II and was imprisoned by the French.
Source: ArtDaily.