Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla A shekara ta 1939, D'Oyly Carte ya rushe a taƙaice saboda fashewar yakin duniya na biyu. Green ya ci gaba da yin aiki tare da wasu kamfanoni, ciki har da Charles B. Cochran's don bita'' Lights Up'a gidan wasan kwaikwayo na Savoy.
Tabbas, wani nau'i mai rikitarwa na jumla shine "A shekara ta 1939, D'Oyly Carte ya rushe a takaice saboda barkewar yakin duniya na biyu. Green ya ci gaba da yin aiki tare da wasu kamfanoni sannan ya shiga Rundunar Sojan Sama ta Royal, inda ya yi aiki a matsayin mai koyarwa da mai gudanarwa daga 1941 zuwa 1945. "