Adolf Hitler was born in Austria in 1889 and joined the German army in World War I. After Germany's defeat, he joined a small political party called the German Workers' Party and became its leader, renaming it the Nazi Party. As Chancellor of Germany, he established a dictatorship and started World War II by invading Poland in 1939. Toward the end of the war in 1945, with the Soviet army advancing on Berlin, Hitler married his long-time partner Eva Braun and the two then committed suicide.