On the eve of D-Day, the SOE organised with the French Resistance the complete destruction of the rail and communication infrastructure of western France the largest coordinated attack of its kind in history Allied supreme commander Dwight Eisenhower later wrote that "the disruption of enemy rail communications, the harassing of German road moves and the continual and increasing strain placed on German security services throughout occupied Europe by the organised forces of Resistance, played a very considerable part in our complete and final victory". The SOE also conducted operations in Africa, the Middle East and the Far East.