Bar Lev Line
October 30, 1968: Israeli helicopter-borne Sayeret Matkal commandos carry out Operation Shock, destroying an Egyptian electric transformator station, two dams along the Nile River and a bridge. The blackout causes Nasser to cease hostilities for a few months while fortifications around hundreds of important targets are built. Simultaneously, Israel reinforces its position on the east bank of the Suez Canal by construction of the Bar Lev Line.