The Hessischer Rundfunk produced a portrait of him in 1980, in which he spoke about his years in Berlin before Hitler came to power.
It was told to Kolbenhoff and to his comrades, that Hitler would not remain in the government for long time and that a revolution of the working class in Germany would take place that would sweep him away and communist dictatorship would be the unavoidable consequence.
Walter now has descendants that live in London England In 1933, he left Germany for Denmark, where he stayed until 1940, with Wilhelm Reich.
As German troops invaded Denmark in 1940 Kolbenhoff received orders from the communist party to go back to Germany and to join the Wehrmacht and to form a red cell.
He translated a lot of crime novels from English into German and wrote one himself about the man-hunt of the French Foreign Legion in Germany under chancellor Konrad Adenauer.