More than 400 witnesses were called, many of them soldiers who were supposed to testify that the French army was not adequately equipped to resist the Wehrmacht invasion of May–June 1940. It was alleged that Blum's legislation, enacted after the 1936 Matignon Agreements which had introduced the 40-hour working week and paid leave for workers and had nationalised some businesses, had undermined France's industrial and defence capabilities. The left-wing Popular Front government was also held to have been weak in suppressing "subversive elements and revolutionists."