 Rear Admiral Marie-Jean-Lucien Lacaze relieved Gauchet on 16 August and "Mirabeau" joined her squadron in its tour of the Eastern Mediterranean in October–December, making port visits in Egypt, Syria, and Greece.Lacaze shifted his flag to her sister on 12 March 1914 and the ship had to briefly withdraw from the grand fleet exercises on 13 May due to engine troubles.As tensions rose during the July Crisis, "Mirabeau" and the other ships of the First Battle Squadron downloaded their practice ammunition and exchanged suspect lots of propellant for new ones beginning on 27 July.