 Moulin left London on 21 March 1943, with orders to form the Conseil national de la Résistance (CNR), a difficult task since the five resistance movements involved, besides the three already in the MUR, wanted to retain their independence.The first meeting of the CNR took place in Paris on 27 May 1943.Some historians consider Moulin one of the most important figures in the French Resistance because of his actions in unifying and organizing the various resistance groups, which had previously been operating in an independent and uncoordinated manner.