One of his best-known paintings, his Self-portrait of 1941, shows him seated in front of an easel, cradling his brush in his right hand (he used his left arm to guide his injured right arm when painting). ...Pippin served in the 369th infantry, the famous Harlem Hellfighters, in Europe during World War I, where he lost the use of his right arm after being shot by a sniper.... initially took up art in the 1920s to strengthen his wounded right arm; his activity as a painter began in earnest around 1930, when he completed his first oil painting, The End of the War: Starting Home. By the late 1930s, critic Christian Brinton, artists N. C. Wyeth and John McCoy, collector Albert C. Barnes, dealer Robert Carlen and curators Dorothy Miller and Holger Cahill championed Pippin's distinctive paintings that captured his childhood memories and war experiences, scenes of everyday life, landscapes, portraits, biblical subjects, and American historical... (https://en.wikipedia.org/wiki/Horace_Pippin)