 In April 1918, "Mirabeau" accompanied her sisters and to Mudros where they remained for the rest of the war.The 1st Naval Army was reorganized on 1 July and most of the "Danton"-class ships were assigned to the Second Squadron () with "Mirabeau" part of the First Division of the Squadron.After the Armistice of Mudros was signed on 30 October between the Allies and the Ottoman Empire, the ship participated in the early stage of the occupation of Constantinople beginning on 12 November.