Kammala jumla mai zuwa: Wilsey ya yi aiki a Yaƙin Duniya na Biyu, a matsayin Kwamandan Kwamandan (CO) na 9th Battalion, Worcestershire Regiment a Arewacin Ireland da Kudu maso gabashin Ingila daga Janairu-Oktoba 1943. Bataliya ta kasance wani ɓangare na Brigade na 182 na Division na 61 kuma, kodayake an zaɓe shi da farko don shiga cikin mamayewar Allied na Normandy, amma ba ta cika ba. Daga nan ya yi aiki a matsayin CO na Battalion na 7, Duke na Wellington's Regiment, wanda ya kasance wani ɓangare na Brigade na 147 na 49th (West Riding) Infantry Division. Ya jagoranci rundunar a lokacin mamayewar Allied na Normandy a watan Yunin 1944 kuma a duk lokacin yakin Normandy, kuma ta hanyar mafi yawan
Yakin Arewa maso Yammacin Turai har zuwa, a farkon Janairu 1945, an ba Wilsey damar zama kwamandan Brigade na 158, wani ɓangare na 53rd (Welsh) Infantry Division, wanda ya umurci sauran yakin a Arewa maso Yammacin Turai har zuwa Ranar Nasara a Turai a watan Mayu 1945.