 These contributions by the resistance group via the defense industry and production sites were later to prove to be 92 percent correct and were thus an effective contribution to Allied warfare.On the one hand, the Allies were able to target the arms industry and on the other hand, this information and the subsequent air strikes decisively weakened the supply of the German Air Force.Messner provided the first information about the mass murder of Jews from his Semperit plant near Auschwitz - a message the enormity of which amazed the Americans in Zurich.