The President of the Russian Democratic Republic, also called the President of the RDR or just the President, was the Republic's head of government, wielding large executive powers. The post was established at the end of the Russian Civil War in 1921, succeeding the chairman of the Duma of the provisional government; which was the leadership of the White movement. The president is also the commander-in-chief of the military (Russian National Army). To run in an election, a nominee for presidency had to be at least 35 years old and had to have resided in Russia for at least 15 years. An individual could serve three terms of four years each at most. In special situations (as decided by the constitutional court), the President had the power to appoint a Prime Minister.