While the regular British forces were advancing towards Jerusalem and Baghdad, T.E. Lawrence and the Arab Revolt were causing havoc behind the lines. This week 100 years ago, they were continuing to attack the important Hejaz railway which was one of the vital supply routes for the Ottoman Army. On October 4, the Battle of Broodseinde was fought near Ypres and the costly British victory there caused real headaches for German general Erich Ludendorff.