This paper aims at shedding some light on the impact of the ISAF mission on the German armed forces. First, a short overview of the essential operational and strategic dynamics of the Bundeswehr’s ISAF deployment between 2003 and 2013 will be presented. Then, some of the resulting changes in operational design and military discourses are presented, including the perceived need for a “return” to classical war-fighting capabilities. Related to this, the third section presents some fundamental influences on the future of the Bundeswehr, including the impact on force evolution and organisational identity. In the conclusion, a few resulting consequences for the future shape of German security policy are discussed.