sentences:  From 1914 until 1917 Eisler served as an officer in Austria-Hungary’s 59th “Erzherzog Rainer” Infantry Regiment, and was awarded the silver medal and was made a knight of both the Order of Francis Joseph and the Iron Cross.Eisler’s contacts with the “Hamburg School” of art history, which included Aby Warburg and Fritz Saxl and the philosopher Ernst Cassirer, began in the early 1920s.During this period, Eisler also introduced Gershom Scholem to Warburg’s circle.