giving the Allies their first victory on land in the war; however, the British have already decided to evacuate Narvik. Winston Churchill warns the House of Commons of the United Kingdom to "prepare itself for hard and heavy tidings." The Wormhoudt massacre (or Wormhout massacre) takes place with the mass murder of 80 British and French POWs by Waffen-SS soldiers from the 1st SS Division Leibstandarte SS Adolf Hitler during the Battle of France. May 29 – The Vought XF4U-1, prototype of the F4U Corsair U.S. fighter later used in WWII, makes its first flight. June June 1 – WWII: Rear Admiral Sir W. Frederic Wake-Walker's flagship, the destroyer Keith, is sunk by Stukas at Dunkirk. June 3 WWII: Paris is bombed by the Luftwaffe for the first time. The Holocaust: Franz Rademacher proposes the Madagascar Plan. The Weather Bureau is transferred to the United States Department of Commerce. June 4 – WWII: The Dunkirk evacuation ends: The British and French navies, together with large numbers of civilian vessels from various nations, complete evacuating 300,000 troops from Dunkirk, France to England. Winston Churchill tells the House of Commons of the United Kingdom, "We shall not flag or fail. We shall fight on the beaches... on the landing grounds... in the fields and the streets.... We shall never surrender." June 7 – King Haakon VII of Norway and his government are evacuated from Tromsø to London, on HMS Devonshire. June 10 WWII: Italy declares war on France and the United Kingdom. U.S. President Franklin D. Roosevelt denounces Italy's actions with his "Stab in the Back" speech during the graduation ceremonies of the University of Virginia. Canada declares war on Italy. The Norwegian Army surrenders to German forces. The French government flees to Tours. June 11 – WWII: The Western Desert Campaign opens, with British forces crossing the Frontier Wire into Italian Libya. June 12 – WWII: 13,000 British and French troops surrender to Major-General Erwin Rommel's 7th Panzer Division, at Saint-Valery-en-Caux. June 13 – WWII: Paris is declared an open city. June 14 – WWII: The French government flees to Bordeaux, and Paris falls under German occupation. U.S. President Franklin D. Roosevelt signs the Naval Expansion Act into law, which aims to increase the United States Navy's tonnage by 11%. A group of 728 Polish political prisoners from Tarnów become the first residents of the Auschwitz concentration camp. Soviet ultimatum to