Career
Müller, in cooperation with German journalist Rudibert Kunz, is known for being the first historian to write about the use of Chemical weapons in the Rif War in a 1999 book titled Giftgas Gegen Abd El Krim: Deutschland, Spanien und der Gaskrieg in Spanisch-marokko, 1922-1927. Müller is one of the lead researchers on the seminal work Germany and the Second World War.
