Dee ihe na-aga n'ihu maka paragraf a - Na 21 Machị 1918, ndị German gbalịrị ịpụ na Michael Offensive, nke bụ akụkụ nke nnukwu mwakpo German nke oge opupu ihe ubi; ndị AIF tara ahụhụ 15,000 n'ihi mgbalị a. N'oge ọrụ a, ndị agha Australia duziri usoro nchekwa na ọgụ iji jide ma weghachite Villers  Brettoneux
n'agbata Eprel 4 ruo 25, 1918. Mgbe ndị agha German kwụsịrị mwakpo, ndị Australian Corps bidoro isonye na ọrụ "Peaceful Penetration", nke bụ mwakpo ndị a na-eme iji kpagbuo ma nweta obere mpaghara; ndị a gosipụtara nke ọma na e jidere ọtụtụ ebumnuche arụmọrụ.