After a nine-year absence, the XIII session of the International Geological Congress, was held between August 10th to 19th in Brussels in 1922. The main aim of the geologists was the renewal of the by then well-established tradition of an international geological forum for discussion subsequent to the four-year long conflict of WWI that had deeply divided not only nations, but also scientific communities. Consequently, the conditions put in place by the IGC organizational committee for participation, the procedure of the congress symposia, council meetings and fieldtrips, selection and also exclusion of scientific themes and daily schedule of the event itself reflected this extraordinary and unprecedented situation. The shadow of these still open war wounds also weighed heavily on the decisions that were taken by the IGC council regarding international scientific cooperation and the future of the organization of geology as a scientific union.