Career
He was killed in action in May 1944. Ziegler wrote his doctoral dissertation for Heidelberg University in 1925 Die Bedeutung des geltenden Wahlverfahrens für die politische Struktur Deutschlands (The importance of the current election process for the political structure of Germany)
In the interval, he published Die moderne Nation. Ein Beitrag zur politischen Soziologie.
Subsequently, he published Autoritärer oder totaler Staat.
(Authoritarian or total State) Tübingen: Mohr, 1932 and Die berufliche und soziale Gliederung der Bevölkerung in der Tschechoslowakei. (The professional and social structure of the population in Czechoslovakia) Brünn: Rudolf M. Rohrer, 1936.