Hitler later dramatised an episode from this period when his father took him to visit a customs office, depicting it as an event that gave rise to an unforgiving antagonism between father and son, who were both strong-willed.
Hitler rebelled against this decision, and in Mein Kampf states that he intentionally did poorly in school, hoping that once his father saw "what little progress I was making at the technical school he would let me devote myself to my dream".
In December 1941, he formally declared war on the United States, bringing them directly into the conflict.
Failure to defeat the Soviets and the entry of the United States into the war forced Germany onto the defensive and it suffered a series of escalating defeats.
This led to former chancellor Franz von Papen and other conservative leaders persuading President Paul von Hindenburg to appoint Hitler as Chancellor on 30 January 1933.
Shortly after, the Reichstag passed the Enabling Act of 1933, which began the process of transforming the Weimar Republic into Nazi Germany, a one-party dictatorship based on the totalitarian and autocratic ideology of National Socialism.
In 1923, he attempted to seize power in a failed coup in Munich and was imprisoned.
The baptismal register did not show the name of his father, and Alois initially bore his mother's surname Schicklgruber.
In 1842, Johann Georg Hiedler married Alois's mother Maria Anna.
Under Hitler's leadership and racially motivated ideology, the Nazi regime was responsible for the genocide of at least 5.5 million Jews and millions of other victims whom he and his followers deemed Untermenschen (sub-humans) or socially undesirable.
Hitler and the Nazi regime were also responsible for the killing of an estimated 19.3 million civilians and prisoners of war.