The Reichsstatthalter (German: [ˈʁaɪçsˌʃtathaltɐ], Reich lieutenant) was a title used in the German Empire and later in Nazi Germany.
The office of Statthalter des Reiches (otherwise known as Reichsstatthalter) was instituted in 1879 by the German Empire for the areas of Alsace (Elsaß) and Lorraine (Lothringen) that France had ceded to Germany following the Franco-Prussian War. It was a form of governorship intended to exist while Alsace-Lorraine became a federal state of the Empire. It was abolished when Alsace-Lorraine was, in turn, ceded back to France after Germany lost World War I.
During the Third Reich, the Nazis created the office of Reichsstatthalter (Reich Governor or Reich Deputy) to gain direct control over the federal states (i.e., the states other than Prussia) after winning the general elections of 1933. Their independent state governments and parliaments were successively abolished, and the Reich government took over direct control in a process called Gleichschaltung ("coordination").
Two weeks after the passage of the Enabling Act of 1933, which effectively made Adolf Hitler the dictator of Germany, the Nazi government issued the Second Law for Synchronization of the States with the Reich (Zweites Gesetz zur Gleichschaltung der Länder mit dem Reich) on 7 April 1933. This law deployed one Reich Governor in each state. The Reich Governors were given the task of overseeing the fulfillment of Hitler's political guidelines in the states. Indeed, the law required them to carry out "the general policy of the Chancellor." In practice, they acted as proconsuls with complete authority over the state governments. The deputies' main authorities lay in: