Karl Bleibtreu (1906) Völker Europas … !: Der Krieg Der Zukunft [Peoples of Europe …! The war of the future]
A very detailed future war novel which ends in the concentration of Vereiniten States of Europe.
Clarke is very dismissive of Bleibtreu’s earlier works – three books under the generic title of Die Entscheidungsschlachten des europaischen Kriegs, 18.. [I.F. Clarke (1966) Voices Prophesying War 1763-1984],
Full text (German): https://archive.org/details/vlkereuropasder00bleigoog
