Soo saar nuqul ka kooban weedhan Sanadkii 1939kii, D'Oyly Carte si kooban ayaa loo kala diray sababtoo ah Dagaalkii Labaad ee Adduunka. Green wuxuu sii waday in uu la shaqeeyo shirkado kale, oo ay ku jiraan Charles B. Cochran's ee revue'' Lights Up'ee Savoy Theatre.
Dabcan, nooc ka sii adag xukunka waa "Sannadkii 1939, D'Oyly Carte si kooban ayaa loo kala diray sababo la xiriira qarxinta Dagaalkii Labaad ee Adduunka. Green wuxuu sii waday inuu la shaqeeyo shirkado kale ka dibna wuxuu ku biiray Royal Air Force, halkaas oo uu ugu adeegay sidii macallin iyo maamulaha 1941 ilaa 1945. "