He received his Ph.D. from the University of Heidelberg in 2009. His research interests include postwar German-American relations, GIs in Germany, and the 1960s in a transatlantic perspective. He is currently completing his book about the U.S. Army in Germany between 1968-1975 and is planning to write his next book on militarism and anti-militarism in West Germany during the 1970s and 1980s.