2779888 French sailors in Constantinople amusing themselves by playing leapfrog (colour litho) by French School, (20th century); Private Collection; (add.info.: French sailors in Constantinople amusing themselves by playing leapfrog. The sailors had been sent to the Ottoman capital to help guard the French embassy amid fears of unrest sparked by reverses suffered by the Turks in the First Balkan War. A Constantinople. Nos marins s\'amusent. Illustration for Le Petit Journal, 22 December 1912.); 穢 Look and Learn.