On 14 July I935 a mass meeting was held in the Buffalo Stadium at Montrouge on the outskirts of Paris. It was under the auspices of the Communists, Socialists, Radicals, CGT, and a number of other political groups, and it marked in effect the launching of the Front Populaire. The proceedings ended with an oath 'to remain united to defend democracy, to disarm and dissolve the factious leagues, to place our liberties out of reach of fascism. We swear', the oath continued 'on this day which reminds us of the first victory of the Republic, to defend the democratic liberties conquered by the people of France, to give to the workers bread, to the young people work, and to the world a great human peace'. And in the afternoon a crowd, estimated by the police at 00oo,ooo strong, marched in procession from the Bastille to the Cours de Vincennes. The foundation of the Popular Front raised hopes and fears which were to increase over the next year; and the Fourteenth of July celebrations a year later, in I936, were a festival that seemed to mark the triumph of the Front Populaire, though it was a triumph soon to turn to disappointment. In the thirty years since July I935, the aims, achievements, and failures of the Popular Front have not ceased to be the subject of lively controversy, while the character and policies of its leader, Leon Blum, continue to interest both politicians and historians. For some Leon Blum was one of those responsible for the defeat of 1940 L'homme qui a sape l'armee franfaise', as Marshal Petain called him.1 For others the government of the Front Populaire marked the first stage of an overdue social revolution in France, the effects of which are still being felt. On the left, Blum and his government have been criticized by writers such as Colette Audry and Daniel