Adolf Hitler took power in Germany in 1933 and established a totalitarian Nazi government, consolidating his control over time. He appointed key leaders to head major aspects of government, including Heinrich Himmler to oversee the SS and concentration camps, Joseph Goebbels as Minister of Propaganda, and Hermann Goering to head the secret police and air force. By 1936, Hitler had centralized power and aimed to prepare Germany for war within four years under the Office of the Four Year Plan. He abolished state governments, instead appointing his own regional governors to impose his rules across Germany.