Kammala wannan jumla: A farkon 1918, 5th Pioneers sun goyi bayan ayyukan tsaro na Allied wanda aka yi yaƙi don amsawa ga hare-haren bazara na Jamus. A tsakiyar watan Afrilu, a lokacin
Yaƙin na biyu na Villers-Bretonneux, an kai wa wasu sassan bataliya hari da iskar gas yayin da suke tsaron hanyoyin da ke kusa da ƙauyen. Daga bisani an yi amfani da su don tono maɓallin kariya don samar da kariya ta gefe kafin hare-haren Jamus da kuma haɗuwa da na farko da na biyu na tsarin tsaro. Bayan da Allies suka yi watsi da hare-haren Jamus, a cikin kwanciyar hankali da suka biyo baya, Allies sun nemi sake samun shirin ta hanyar jerin hare-haren kananan hare-haren kafin su ci gaba da kai hare-hare. A wannan lokacin, rundunar ta shiga cikin harin da aka kai a kusa da Morlancourt a karshen watan Yuli, inda suka yi asarar rayuka 16. Allies sun kaddamar da hare-haren kwanaki 100 a kusa da Amiens a watan Agusta 1918, wanda ya kawo karshen yakin. A matsayin wani ɓangare na wannan mummunan aiki, 5th Pioneers sun goyi bayan ayyukan da ke kusa da Peronne a ƙarshen watan Agusta.