 A massive amount of planning was needed, since troops and administrative centres were widely dispersed in southern Italy.Trains and road convoys had to be arranged, while not leaving any of the front-lines vulnerable to counter-attacks by the German forces.Troops and materiel were to be moved from ports at Naples and Leghorn in Italy to Marseilles in France, at the rate of 3700 people, 40 tanks, 650 wheeled vehicles, and 50 carriers each day.