Informant38

1939: Germany invades Poland

The unprovoked attack follows yesterday's report on German radio that the border town of Gliwice had been raided by a group of Polish soldiers, who had all been shot dead.
German radio broadcast a list of "demands" never submitted to the Polish Government.
The Prime Minister, Neville Chamberlain, held a meeting with King George today in Downing Street.
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Following a number of German-staged incidents (Operation Himmler), which gave German propaganda an excuse to claim that German forces were acting in self-defense, the first regular act of war took place on September 1, 1939, at 04:40 hours, when the German Air Force (Luftwaffe) attacked the Polish town of Wieluń, destroying 75% of the city and killing close to 1,200 people, most of them civilians. Five minutes later, at 04:45 hours, the old German battleship Schleswig-Holstein opened fire on the Polish military transit depot at Westerplatte, in the Free City of Danzig on the Baltic Sea.

Polish September Campaign
Wikipedia