As a reserve officer, he was captured in Germany, which, because of another prisoner from the Australian outback, resulted in a fascination with the indigenous people.
[citation needed] Falkenberg then chose the Murinbata people in Port Keats in North Australia for his field research in 1950.
Group Relations of Australian Aborigines in the Port Keats District (Oslo University Press; 1962).
[citation needed] His later books include The Affinal Relationship System: A New Approach to Kinship and Marriage among the Australian Aborigines at Port Keats (with his wife Aslaug Falkenberg; University of Oslo; 1981).
[6][7] Shapiro notes that the Falkenbergs fall into the tradition of "discursive ethnographers"; he considers this book provides a large amount of data, but criticises their approach as naive and at times "unnecessarily anecdotal and insufficiently formalised".