<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngo-1917, empini yesibili yase-Aisne: iBois de Mortier, eMont de Singes Ephreli kuya kuMeyi. Ngo-1918, empini yesine yaseChampagne: eMontagne de Reims; empini yesibili yaseMarne  <response>: July-September, kuya empini yaseSerre October. 