The Second World War officially began with Germany’s invasion of Poland on 1 September 1939. “Officially”, because Hitler first wanted to launch the operation on 26 August. For diplomatic reasons, the launch was postponed. But not all the special units responsible for actions behind the Polish lines received the counter-order in time, leading to various clashes. SGS Fall Weiss (White Plan in German, the code name for the operation) covered the Polish campaign between September and October 1939. The German forces appeared to be fast, brutal and unstoppable, thanks to a…