Canadian preparations for air defence, should the country be attacked during the Second World War, is also highlighted.

The later sequences of air-raid and civil defence preparations in Canada were primarily filmed in British Columbia.

[1] The deep baritone voice of stage actor Lorne Greene was featured in the narration of Banshees Over Canada.

Each film was shown over a six-month period as part of the shorts or newsreel segments in approximately 800 theatres across Canada.

The NFB had an arrangement with Famous Players theatres to ensure that Canadians from coast-to-coast could see them, with further distribution by Columbia Pictures.