Democratic and Socialist Union of the Resistance References Democratic and Socialist Union of the Resistance political party, France Ask Anything Homework Help Also known as: UDSR, Union Démocratique et Socialiste de la Résistance(Show More) Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: René Pleven…was president of the left-centre Democratic and Socialist Union of the Resistance (Union Démocratique et Socialiste de la Résistance; UDSR); he was twice minister of defense (1949–50, 1952–54) and twice premier (July 1950–February 1951 and August 1951–January 1952). Read More…was president of the left-centre Democratic and Socialist Union of the Resistance (Union Démocratique et Socialiste de la Résistance; UDSR); he was twice minister of defense (1949–50, 1952–54) and twice premier (July 1950–February 1951 and August 1951–January 1952). Read More