His last documentary was produced with his daughter and colleague (since 1986) Grace Guggenheim: the 2003 TV documentary film "Berga: Soldiers of Another War", a little-known story about a group of 350 American soldiers captured by the Nazis during the Battle of the Bulge who, because they were Jewish or the Nazis thought they "looked Jewish", were sent to slave labor camp and worked beside civilian political prisoners. (Guggenheim, who was Jewish, had himself been a member of the 106th Division, which had the highest casualty rate of the Allied Divisions. But a severe leg infection caused him to be left behind when his unit was shipped overseas.) Guggenheim finished the film six weeks before his death in October 2002 from pancreatic cancer. "Soldiers and Slaves", a companion book to the film, was published by Roger Cohen, "New York Times" and "Herald Tribune" columnists using research materials.