<prompt> Bhala okuqhubekayo kwalesi sigaba - Phakathi neMpi Yezwe II, wayephethe ibutho lezikhali. Wahola i-artillery phesheya kwezilwandle ngesikhathi sokuhlasela kwe-Allied eSicily ngoJulayi-Agasti 1943, lapho athola khona i-Distinguished Service Cross yokuqala. Waqhubeka nokuhola ibutho lezikhali ngesikhathi sokuhlasela kwe-Allied e-Italy ngoSepthemba, nasezigabeni zokuqala ze-Campaign yase-Italy, ngaphambi kokuthi ekugcineni athunyelwe eNgilandi. Ngesikhathi seMpi yaseNormandy ngo-Agasti 1944, uMcLain wathatha isikhashana ukuphatha i-90th Infantry Division, eyayinezinkinga eziningi zokuphatha. UMcLain waguqula i-90th yaba ibutho lokulwa elisezingeni lokuqala, futhi walihola eFrance lonke ekuqhubekeleni phambili kwama-Allied kusuka eParis kuya eRhine  <response>: futhi ezimpini eziningi eNtshonalanga. Ngo-Okthoba wabe esethatha umyalo we-XIX Corps, wahlala engumkhuzi wayo kulo lonke impi. Wayenguye kuphela uMvikeli Kazwelonke owayephethe ibutho empini phakathi neMpi Yezwe II. 