3rd Battle of Ypres October 1917
In all the fighting in the 3rd Battle of Ypres, in and around Passchendaele the 3 Australian divisions lost 6,500 men which represented 20% of its operational strength. It is believed that the Germans lost 25,000 men and 5,000 prisoners. The German High Command officially recorded October 4, 1917 as a “Black Day”. Fresh German troops were put in the line opposite the Anzac troops on October 5 despite Haig’s attempts to break the German lines.
Wanting to push his advantage Field Marshall Haig committed the Australian 2nd Division to an attack on Keiburg Spur on October 9, 1917 over wet ground. The Australian 2nd Division formed the flank for an attack by the British 66th Division. The Australian 2nd Division controlled a front of about 800 metres. To the north, the French and British 5th armies couldn’t hold gained ground. The Australian 2nd Division ( of I Anzac Corps ) drove to Keiburg but being unsupported was driven back. On the strength of reports from the 9th of October the High Command believed that enough ground had to be gained to justify the next attempt to seize and pass Passchendaele on October 12, 1917.
Source : Australian Battlefields