On October 15, 1894, Alfred Dreyfus, a Jewish artillery captain attached to the French General Staff, was arrested on charges of having betrayed his country by selling military secrets to the Germans. He was convicted of treason by military court-martial and sentenced to life imprisonment on Devil's Island, but over the next 12 years a small group of human rights supporters was able to clear him and identify the real traitor, and Dreyfus was pardoned...