text: This photo from the U.S. Army Signal Corps taken during World War II shows a bakery in Nuremberg, Germany, which supplied bread to Stalag 13, seven miles away. In mid-April, over 2,200 prisoners at the camp were stricken with arsenic poisoning from arsenic coated on the loaves given to the prisoners. Full and empty bottles of the toxicant were found under the floor of the facility. Seventy years after the most daring attempt of Jewish Holocaust survivors to seek revenge, the leader of the plot has only one simple regret _ that to his knowledge he didn't actually succeed in killing any Nazis. Joseph Harmatz is one of the few remaining Jewish "Avengers" who carried out a mass poisoning of former SS men in an American prisoner-of-war camp in 1946 after World War II. The poisoning sickened more than 2,200 Germans but ultimately caused no known deaths. (U.S. Army Signal Corps via AP