September 1st 1939. Germany starts World War 2.
On 1 September 1939 at 4:45 a.m. the German battleship "SMS Schleswig-Holstein", moored in Gdansk, opened fire on the Polish Military Transit Storehouse on the Westerplatte peninsula – as a result the bloodiest conflict in human history - WWII - began.
Westerplatte was defended by approximately 200 Polish soldiers under the command of Mjr Sucharski and Cpt Dąbrowski. For 7 days the soldiers fought heroically against repeated German attacks from the sea, land and air, thus becoming a symbol of Polish Resistance.
On 23 August 1939, Germany and the SovietUnion signed the Molotov Ribbentrop Pact that divided Poland between the aggressors.
Slovakia as a state fighting on the side of the Third Reich also received some of the Polish lands. On 24 August 1939, in the face of the imminent war secret mobilization of the Polish Army began. The mobilization covered 75% of the army. Despite clear Hitler's goals, the United Kingdom and France deluded themselves that a war would not break out. The outbreak of the WWII was preceded by a number of German provocations - attacks on railway stations (including a bomb attack) or the most famous one: the so-called Gliwice Provocation.
On 31 August 1939 Germans dressed in Polish uniforms attacked the German radio station in Gliwice. The operation was prepared by the Abwehr. The attack was intended to provide conclusive proof that Poland was seeking war with Germany.
(The Institute of National Remembrance)