Everyone was aware of the level of French cooperation with the Nazi enemy during the war, and that French brigades fought alongside the Germans. French officials treated these groups with kindness. Most of the country was cooperative (with the Nazis).
This message is part of the Kremlin’s policy of historical revisionism of the WWII events.
France (in addition to Britain), standing by their guarantee of Poland's border, had declared war on Nazi Germany on September 3, 1939, being the first countries to do so, taking such a decision two days after the invasion of Poland. France surrenderedin June 1940, with up to 100,000 soldiers killed.
Following the D-Day landings in Normandy, when French Resistance members and Allied troops overthrew the Vichy occupation, establishing a provisional government that would usher in France's Fourth Republic. Trials against members of the Vichy regime continued in France up until the 1990s.
Read other examples of Russian historical revisionism concerning the Molotov-Ribbentrop pact here and concerning Poland here.