This volume deals with cross-border infrastructural cooperation during the Second World War. It compares the development of postal services, telecommunications, railways and shipping, and places its findings in the context of the long-term developments of European integration. It therefore calls into question the hitherto dominant assumption that the Second World War signalled a caesura in international cooperation. At the same time, the study shows that cross-border initiatives were undertaken not only in spite of the war, but sometimes precisely because of it. The individual contributions thus also intervene in the debate on ‘New Europe’. With contributions by Valentine Aldebert, Claire Aslangul-Rallo, Julia Eichenberg, Pascal Griset, Christian Henrich-Franke, Jiří Janáč, Léonard Laborie, Martinal Libera, Sabrina Proschmann and Guido Thiemeyer.