Which battle did Friedrich Bertram Sixt von Armin participate in from July to November 1917?
Friedrich Sixt von Armin:  In the latter he participated in many battles on the Western Front, including the Battles of Passchendaele and the Lys. Battle of Passchendaele:  The battle took place on the Western Front, from July to November 1917, for control of the ridges south and east of the Belgian city of Ypres in West Flanders, as part of a strategy decided by the Allies at conferences in November 1916 and May 1917.
i don't know