Invasion of sovereign Poland: Nazi Wehrmacht soldiers break a barrier on the German-Polish state border between Danzig (Gdańsk) and Sopot during Operation Fall Weiss (Wojna obronna 1939 roku). The beginning of the Second World War.
Sources of information about the German soldiers photo:
1. Bundesarchiv Bild 183-51909-0003
2. www.academia.edu
Location: Poland
Date: September 1, 1939
Photo by Hans Sönnke