It’s not easy with authors:
Mehring, Das Mitternachtstagebuch. Texte des Exils 1933-1939.
„Two hundred and fifty participants in the 16th German Student Conference took part in an excursion to Flanders. They were addressed by their leader, G.Krüger in the cemetery of Langemark[P1] . He ended with the words, ‘Where we are standing today is a piece of Germany. Germany is wherever Germans gave their life and blood for their Volk.’ The Belgian officials were very cooperative. There were no incidents to report during the excursion“