If the question relates to the beginning of the reformation, Martin Luther was the Augustinian monk (correct spelling) who led the reformation in Germany.
Germany
Germany declared war on Poland, which led to England and France declaring war on Germany.
Generals Patton, Montgomery and Eisenhower and other lower Generals led the allies through France.
Humanism and the Reformation were two distinctive experiences of the German Renaissance period. Humanism emphasized the value of human reason and intellect, promoting education and cultural achievements. The Reformation, led by Martin Luther, focused on reforming the Catholic Church and led to the establishment of Protestantism in Germany.
Germany was fractured into warring Provinces in the Religious Wars of the Protestant Reformation. Protestant and Catholic Provinces were not reunited until Otto Von Bismarck in 1870. He immediately embarked on Wars of Aggrandizement against France 1871, Austria, and against Poland.
Adolf Hitler
Emperor Napoleon III led France during the Battle of Puebla.
Germany's blitzkrieg against poland
Germany's invasion of Poland.
The Reformation led to the division of Christianity into Catholic and Protestant faiths.
During the 1930's, Britain and France had a defence agreement with Poland. On 1 September 1939, German troops invaded Poland, so on 3 September 1939, in response to that invasion, Britain and France declared war on Germany.