War and Conflict, World War II, pic: May 1940, A German soldier stands guard over a captured Dutch gun on the island of Texel, Germany invaded Belgium, Holland and Luxembourg in May 1940 claiming justification because they feared that the Allies, (France and Germany) had planned to use the Low Countries as a springboard for an attack on the Ruhr (Photo by Popperfoto/Getty Images)
History of Sorts 