Kammala wannan jumla: A farkon shekarar 1918, Jamusawa sun kaddamar da babban hari a Yammacin Yamma bayan rushewar Rasha ya ba su damar kara yawan sojojin su a yamma. Kashewa da farko a kan kudancin kudancin Birtaniya, hare-haren ya tura Allies baya da yawa, kuma an tilasta wa tawagar ta janye zuwa filayen jiragen sama a baya daga gaba yayin da sojojin Jamus suka ci gaba da ci gaba: a watan Maris ya koma La Bellevue sannan kuma zuwa Fouquerolles, ya kasance a can har zuwa Yuni lokacin da ya koma Liettres don tallafawa Faransanci a lokacin yakin basasa.
Yanayin Marne. A wannan lokacin, an haɗa rundunar tare da No. 10, 22, 51 da (a ƙarshe) 80 na Royal Air Force. Duk da motsawa, rundunar ta ci gaba da yin aiki sosai, ta shiga cikin gwagwarmayar iska-zuwa-iska a lokacin yakin basasa, kuma ana amfani da shi don kai farmaki ga sojojin Jamus masu tasowa (duba hoton hagu). Bayan da aka dakatar da hare-haren na Jamus, sai Allies suka kaddamar da hare-haren kansu a watan Agusta a kusa da Amiens bayan da aka yi amfani da jirgin don kai hari ga filin jirgin saman Jamus, kuma yayin da aka tilasta wa Jamus komawa baya, suka kai hari ga sojojin Jamus da suka janye a kasa. A cikin watan Oktoba, a kokarin da za a ci gaba da ci gaba, rundunar ta motsa sau uku kuma a lokacin da aka sanya hannu kan armistice a watan Nuwamba an kafa shi a Pont-a-Marq.