Mezue ahịrịokwu na-esonụ: N'abalị nke 8 Eprel 1917, ka Agha Arras malitere, ndị 10th Battalion wakporo Louverval Wood, ebe nchebe nke Hindenburg Line nke nchebe German. E merụrụ McCann ahụ n'olu n'oge mwakpo ahụ, ma mgbe ọ kechisịrị ya ma ghara inwe ike ikwu okwu, ọ nọgidere na ndị agha ya ruo ọtụtụ awa, na dịka "Australian Dictionary of Biography" si kwuo, "bụ ihe mkpali nye ndị ikom ya". Ozugbo ọnọdụ ahụ bịara doo anya, ọ gara ka e lebara ya anya n'ụlọ ọgwụ ma kpọga ya n'ụlọ ọgwụ dị n'England. Mgbe izu isii nke mgbake gasịrị, McCann sonyeere ndị otu ya na ngwụcha ọnwa Mee, na-ewere iwu nke A Company. Ọ nọgidere na battalion ahụ n'oge agha nke Passchendaele na Flanders site na July ruo November 1917, gụnyere
Agha nke Menin Road Ridge na Septemba, tupu e ziga ya na battalion ọzụzụ na United Kingdom na ngwụcha Disemba. Ọ laghachiri na battalion ya na June 1918. N'ụbọchị 29 nke ọnwa Juun, mgbe battalion weghaara otu akụkụ nke ndị Germany site n'iji usoro "mmiri na-aga n'udo", ụlọ ọrụ McCann nọ n'ọnọdụ ndị enwetara ọhụrụ mgbe ndị Germany wakporo ma banye n'etiti ọkwa ya. O du ndị ọrụ ya na-ezipụ ozi, ndị ozi na ndị ọrụ nchekwa na-aga n'ihu n'ime oghere. Ndị Germany tụfuru ngwá agha ha, nke gụnyere égbè, ma gbaa ọsọ.