The Sussex Plan was a French-American-British tripartite mission desired by the staff of General Eisenhower in anticipation of the Normandy landings.Among them, 120 French men and women were recruited to carry out a bold plan to parachute in early February 1944, teams of two plainclothes officers (an observer and a radio) behind enemy lines to complete the liberation of France. Their mission: infiltrate and collect information around the clock about the state of affairs of the German order of battle.