Mezue ahịrịokwu na-esonụ: Omume nke 30 Septemba <unk> 4 Ọktọba 1917 bụ usoro ndị German na-emegide ọgụ () n'oge Agha nke Atọ nke Ypres na Flanders, n'oge Agha Worldwa Mbụ. Ndị agha nke anọ nke ndị agha Germany na-eme ngwa ngwa n'oge agha ahụ
Agha nke Menin Road Ridge na 20 Septemba na Agha nke Polygon Wood na 26 Septemba, bụ ọdịda dị oke ọnụ. Na 29 Septemba, Erich Ludendorff (Quartermaster-General nke ndị agha German, nke ya na onye isi ndị isi ndị agha Britain) nwere nyocha na Roulers na ndị isi nke (Army Group Rupprecht nke Bavaria) na ndị isi ndị agha nke anọ.