Short answers, pulled from the story.
Franz Marc was a German painter and printmaker who lived from 1880 to 1916 and is regarded as one of the key figures of German Expressionism. He was a founding member of Der Blaue Reiter, The Blue Rider, and is best known for paintings of animals in bright primary colors.
Franz Marc was struck in the head and killed instantly by a shell splinter during the Battle of Verdun in 1916. He had been drafted into the Imperial German Army as a cavalryman at the outbreak of World War I and died two years later, before orders withdrawing him from combat could reach him.
After the National Socialists took power they suppressed modern art, and in 1936 and 1937 they condemned Marc as an entarteter Kunstler, or degenerate artist. They ordered approximately 130 of his works removed from German museums.
Die Foxes, The Foxes, set a record for Franz Marc when it sold for 42,654,500 pounds in 2022. It was painted in 1913 and was sold at Christie's by the heirs of Kurt Grawi after being restituted to them.
Franz Marc is famous for paintings of animals in natural settings, rendered in bright primary color with an almost cubist style. He assigned emotional meaning to color, using blue for masculinity and spirituality, yellow for feminine joy, and red for the sound of violence.
Der Blaue Reiter, The Blue Rider, was a journal Franz Marc founded in 1911 that became the center of an artist circle. He launched it with August Macke, Wassily Kandinsky, and others who split off from the Neue Kunstlervereinigung.