The Germans invade St. Gregory in 1940. June Mahy sings at a German Army Party "Don't Sit Under the Apple Tree", with her chorus ending: "Til I come marching home." Although the song was written for the 1939 Broadway musical "Yokel Boy", song did not contain the line "Til I come marching home" until 1942, after the United States entered World War 2.
The Dorrs are listening to the radio while discussing Eugene La Salle. Civilian radios in the Channel Islands were confiscated immediately after the occupation.