“I can no longer find any willingness on the part of the Polish Government to conduct serious negotiations with us. These proposals for mediation have failed because in the meanwhile there, first of all, came as an answer the sudden Polish general mobilization, followed by more Polish atrocities. These were again repeated last night. Recently in one night there were as many as twenty-one frontier incidents: last night there were fourteen, of which three were quite serious. I have, therefore, resolved to speak to Poland in the same language that Poland for months past has used toward us.”
– Adolf Hitler, 1939, referring to a series of border incidents engineered by the Nazis in order to find a pretext for war. Operation Himmler (less often known as Operation Konserve or Operation Canned Goods) was a Nazi Germany false flag project to create the appearance of Polish aggression against Germany, which was subsequently used by Nazi propaganda to justify the invasion of Poland. Operation Himmler was arguably the first act of the Second World War in Europe.
More information: http://en.wikipedia.org/wiki/Operation_Himmler