sentences:  In 1955, he was appointed Chief of Staff to the Inspector-General of the Royal Netherlands Navy Prince Bernhard of Lippe-Biesterfeld and aide-de-camp to Queen Juliana, after which he returned to sea in 1958 as commander of the submarine chaser HNLMS "Gelderland".On 7 June 1959, during a NATO naval exercises near Scotland, De Jong received an unexpected telegram with the orders that he was to report the next day to Vice Admiral Leendert Brouwer, the Commander of the Royal Netherlands Navy himself, De Jong was summoned because of his "appointment" as State Secretary for Defence in the new Cabinet de Quay.De Jong was airlifted from the HNLMS "Gelderland" by helicopter and transported to the aircraft carrier HNLMS "Karel Doorman".