Much of this telecommunications infrastructure was damaged during the Second World War and the Japanese occupation. In 1946, when the British re-established their position in Malaya, they repaired the trunk routes, restored fallen telephone poles and installed the copper wires that had either been damaged or stolen. During the Japanese occupation, the Posts & Telegraphs Department had been split into two separate units. When the British returned, they initially re-united the two entities, but this effort was short-lived. Along with the formation of the Malayan Union on 1 April 1946, the Malaysian Telecommunications Department and the Postal Services Department were born, with the former controlling telegraph, telephone and wireless services and the latter overlooking mail, money orders and savings accounts.