Short answers, pulled from the story.
Case Anton, or Unternehmen Anton, was the military occupation of Vichy France by Nazi Germany and Fascist Italy in November 1942. It ended Vichy France's existence as a nominally independent state, disbanded its army, and reduced the Vichy regime to a puppet government within Occupied France.
The Allied landings in French North Africa on the 8th of November 1942 removed Hitler's main reason for tolerating a nominally independent Vichy France. It became clear that Vichy lacked both the political will and the means to prevent French colonial authorities from submitting to Allied occupation, and Hitler could not risk an exposed flank on the French Mediterranean.
French naval commanders scuttled the fleet at Toulon on the 27th of November 1942 to prevent it from falling into German hands. Three battleships, seven cruisers, 28 destroyers, and 20 submarines were sunk, foiling the German Operation Lila, which had been designed to capture those ships intact.
Wehrmacht and Royal Italian Army forces both participated. The German 1st Army advanced from the Atlantic coast parallel to the French-Spanish border, the 7th Army under General Johannes Blaskowitz moved from central France toward Vichy and Toulon, and the Italian 4th Army occupied the French Riviera while an Italian division landed on Corsica.
Operation Attila was a German plan drawn up in December 1940 to occupy Vichy France. Case Anton updated and replaced Operation Attila, incorporating different Wehrmacht units and adding Italian military involvement that the original plan had not included.
After Italy's armistice in 1943 ended its occupation zone, France remained under exclusively German occupation until the Allied invasions of 1944. Operation Overlord in Normandy and Operation Dragoon in the Rhone delta drove the liberation of the country.