Berlin, Germany · May 24, 1943 In June 1942 German submarines sank 637,000 tons of British shipping—a greater total than in any previous or subsequent month. So many prowling U‑boats made it hard for merchant convoys sailing in the major trans-Atlantic traffic lanes to evade detection. The next year, in March, Atlantic U‑boats sank 82 ships (476,000 tons)…
Muerwik, near Flensburg, Northern Germany · May 23, 1945 On this date in 1945, twenty-three days after Adolf Hitler’s suicide under the rubble of the Reich capital, Berlin, and sixteen days after emissaries from Grand Admiral Karl Doenitz’s government agreed to the unconditional surrender of all German military forces, a British liaison officer went to…
Berlin, Germany · May 22, 1939 On this date in 1939 Nazi Germany and Fascist Italy signed the “Pact of Steel,” which tied the two dictatorships in a ten-year military alliance and stipulated that neither side could make peace without the other’s consent. Ominously dubbed the “Pact of Blood” in the planning stage, the alliance…
London, England · May 21, 1941 On this date in 1941 the German heavy cruiser Prinz Eugen and the battleship Bismarck set out from occupied Norway into the main Atlantic shipping lanes, there to act as long-distance commerce raiders. It was the maiden voyage of Germany’s monstrous battleship, the most lethal weapon in any navy’s…
Crete, Eastern Mediterranean · May 20, 1941 With the start of marathon German operations against the Soviet Union, codenamed Operation Barbarossa, a month away, Adolf Hitler needed to ensure that his Romanian oil supplies in and around Ploiești would not come under bomber attack from stationary bases in the Eastern Mediterranean. The most likely source…
London, England · May 19, 1940 Following Britain and France’s declaration of war on Germany on September 3, 1939, neither of the Allies committed to launching a significant land offensive against Adolf Hitler’s Germany as punishment for the invasion of its eastern neighbor, Poland. The most the British were prepared to do was deploy a 315,000‑man…
Cassino, Italy · May 18, 1944 On February 15, 1944, British Gen. Harold Alexander, commander-in-chief of all Allied armies in Italy, ordered the aerial bombing of the ancient Benedictine abbey towering over the town of Cassino on the banks of the Rapido (or Gari) River in Italy. Earlier in January, British, American, and French troops…
Reykjavik, Iceland · May 17, 1941 On April 9, 1940, Nazi Germany invaded Denmark and Norway, ostensibly to protect the neutrality of the two Scandinavian countries against Franco-British aggression. Adolf Hitler had become convinced in mid-December 1939 that the two West European Allies, at war with Germany for three and a half months now, were…
London, England · May 16, 1943 At least since 1937, two years before the outbreak of European hostilities, British intelligence had looked into developing alternative ways to destroy German factories in the Ruhr Valley, Germany’s industrial heartland. Late on this date in 1943 in Germany, a British squadron of nineteen modified Avro Lancaster bombers, each…
The Hague, Netherlands · May 15, 1940 Following the Dutch surrender on this date in 1940, Adolf Hitler appointed fellow Austrian Arthur Seyss-Inquart to be Reichskommissar for the Occupied Netherlands. Previously, long-time Nazi Party member Seyss-Inquart had served as Reichsstatthalter (governor) of the new German province of Ostmark, which had once been the independent country…