When the armistice of Cassibile was announced, on 8 September 1943, Tur was in Rome; following the German occupation of central and northern Italy, he remained in German-occupied territory, but he refused to cooperate with the German authorities, or to join the Italian Social Republic. On 30 March 1945 he was placed in reserve for reasons of age, but he was called back into service until 15 July 1945.