It was the successor to Charles de Gaulle's earlier party, Rally of the French People, and was organised in 1958, along with the founding of the Fifth Republic as the Union for the New Republic (UNR), and in 1962 merged with the Democratic Union of Labour, a left-Gaullist group. In 1967 it was joined by some Christian Democrats to form the Union of Democrats for the Fifth Republic, later dropping the 'Fifth'. After the May 1968 crisis, it was re-named Union for the Defense of the Republic (UDR).