In February, 1941 the 109th Infantry was activated for service in World War II. The regiment fought in the European Theater as part of the 28th Infantry Division, and was demobilized in October, 1945.William Engle, Pittsburgh Press, 28th Division Ready to Open ‘Big Battles’, 27 August 1941William Engel, Pittsburgh Press, ‘Iron Division’ Wants Service Overseas, 11 December 1942United Press International, Pittsburgh Press, Keystone Division Fighting in France, 24 September 1944United Press International, Miami News, 2 Ships Land 809 Returnees, 5 August 1945Associated Press, Reading Eagle, Reading Unit Recognized, 17 January 1947
