The events of the Second World War also affected the coinage substantially. In 1941, aluminium replaced aluminium-bronze in the 50 centimes, and 1, 2, and 5 francs as copper and nickel were diverted into the War Effort. In 1942, following German occupation and the installation of the French Vichy State, a new, short lived series of coins was released which included holed 10 and 20 centimes in zinc. 50 centimes, and 1 and 2 francs were aluminium. In 1944 this series was discontinued and withdrawn and the previous issue was resumed.