ERCHIN 30 (13 Tamuz) - Today's Dafyomi study is dedicated to the blessed memory of U.S. Army Staff Sgt. Seymour Ira Gottlieb (Yitzchak Shimon ben Chaim Shlomo Yosef ha'Levi, Z"L), who died in World War II on the 13th of Tamuz 5704 in the battle of St. Lo, France, fighting the Nazis to save his Jewish brethren in Europe.