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German Blitzkrieg
1.5 million German troops invade Poland all along its 1,750-mile border with German-controlled territory. Simultaneously, the German Luftwaffe bombed Polish airfields, and German warships and U-boats attacked Polish naval forces in the Baltic Sea. Nazi leader Adolf Hitler claimed the massive invasion was a defensive action, but Britain and France were not convinced. On September 3, they declared war on Germany, initiating World War II. -
Lend Lease
Proposed in late 1940 and passed in March 1941, the Lend-Lease Act was the principal means for providing U.S. military aid to foreign nations during World War II. By allowing the transfer of supplies without compensation to Britain, China, the Soviet Union and other countries, the act permitted the United States to support its war interests without being overextended in battle. -
Germany invaded France and captured Paris
On this day in 1940, Parisians awaken to the sound of a German-accented voice announcing via loudspeakers that a curfew was being imposed for 8 p.m. that evening-as German troops enter and occupy Paris. -
Germany bombed London, and the Battle of Britain began.
German and British air forces clashed in the skies over the United Kingdom, locked in the largest sustained bombing campaign to that date. A significant turning point of World War II, the Battle of Britain ended when Germany’s Luftwaffe failed to gain air superiority over the Royal Air Force despite months of targeting Britain’s air bases, military posts and, ultimately, its civilian population. They went to war after the bombing. -
The United States dropped two atomic bombs on Japan
Since 1940, the United States had been working on developing an atomic weapon, after having been warned by Albert Einstein that Nazi Germany was already conducting research into nuclear weapons. By the time the United States conducted the first successful test (an atomic bomb was exploded in the desert in New Mexico in July 1945), Germany had already been defeated. The war against Japan in the Pacific, however, continued to rage. -
The United States was victorious over Japan in the Battle of Midway.
Japanese expansion in East Asia began in 1931 with the invasion of Manchuria and continued in 1937 with a brutal attack on China. On September 27, 1940, Japan signed the Tripartite Pact with Germany and Italy, thus entering the military alliance known as the "Axis." Seeking to curb Japanese aggression and force a withdrawal of Japanese forces from Manchuria and China, the United States imposed economic sanctions on Japan. -
Germany invaded the Soviet Union
The destruction of the Soviet Union by military force, the permanent elimination of the perceived Communist threat to Germany, and the seizure of prime land within Soviet borders for long-term German settlement had been core policy of the Nazi movement since the 1920s. Adolf Hitler had always regarded the German-Soviet nonaggression pact, signed on August 23, 1939, as a temporary tactical maneuver. -
Japan bombed Pearl Harbor.
Just before 8 a.m. on December 7, 1941, hundreds of Japanese fighter planes attacked the American naval base at Pearl Harbor near Honolulu, Hawaii. The barrage lasted just two hours, but it was devastating: The Japanese managed to destroy nearly 20 American naval vessels, including more than 300 airplanes. More than 2,000 Americans soldiers and sailors died in the attack, and another 1,000 were wounded. President Franklin D. Roosevelt asked Congress to declare war on Japan. -
Germany Declares War On The United States
The bombing of Pearl Harbor surprised even Germany. Although Hitler had made an oral agreement with his Axis partner Japan that Germany would join a war against the United States, he was uncertain as to how the war would be engaged. Japan’s attack on Pearl Harbor answered that question. On December 8, Japanese Ambassador Oshima went to German Foreign Minister von Ribbentrop to nail the Germans down on a formal declaration of war against America. -
Bataan Death March
After the April 9, 1942, U.S. surrender of the Bataan Peninsula on the main Philippine island of Luzon to the Japanese during World War II (1939-45), the approximately 75,000 Filipino and American troops on Bataan were forced to make an arduous 65-mile march to prison camps. The marchers made the trek in intense heat and were subjected to harsh treatment by Japanese guards. Thousands perished in what became known as the Bataan Death March. -
Warsaw Ghetto uprising
From April 19 to May 16, 1943, during World War II (1939-45), residents of the Jewish ghetto in Nazi-occupied Warsaw, Poland, staged an armed revolt against deportations to extermination camps. The Warsaw ghetto uprising inspired other revolts in extermination camps and ghettos throughout German-occupied Eastern Europe. -
American and other Allied troops landed in Normandy, France, on D-Day to begin the liberation of Western Europe.
During World War II (1939-1945), the Battle of Normandy, which lasted from June 1944 to August 1944, resulted in the Allied liberation of Western Europe from Nazi Germany’s control. Codenamed Operation Overlord, the battle began on June 6, 1944, also known as D-Day, when some 156,000 American, British and Canadian forces landed on five beaches along a 50-mile stretch of the heavily fortified coast of France’s Normandy region. -
Battle of the Bulge
In December 1944, Adolph Hitler attempted to split the Allied armies in northwest Europe by means of a surprise blitzkrieg thrust through the Ardennes to Antwerp. Caught off-guard, American units fought desperate battles to stem the German advance at St.-Vith, Elsenborn Ridge, Houffalize and Bastogne. As the Germans drove deeper into the Ardennes in an attempt to secure vital bridgeheads, the Allied line took on the appearance of a large bulge, giving rise to the battle’s name. -
Liberation of concentration camps
Soviet soldiers were the first to liberate concentration camp prisoners in the final stages of the war. On July 23, 1944, they entered the Majdanek camp in Poland, and later overran several other killing centers. On January 27, 1945, they entered Auschwitz and there found hundreds of sick and exhausted prisoners. The Germans had been forced to leave these prisoners behind in their hasty retreat from the camp. -
Battle of Iwo Jima
The American amphibious invasion of Iwo Jima during World War II stemmed from the need for a base near the Japanese coast. Following elaborate preparatory air and naval bombardment, three U.S. marine divisions landed on the island in February 1945. Iwo Jima was defended by roughly 23,000 Japanese army and navy troops, who fought from an elaborate network of caves, dugouts, tunnels and underground installations. -
Operation Barbarossa
On June 22, 1941, Adolf Hitler launched his armies eastward in a massive invasion of the Soviet Union: three great army groups with over three million German soldiers, 150 divisions, and three thousand tanks smashed across the frontier into Soviet territory. The invasion covered a front from the North Cape to the Black Sea, a distance of two thousand miles. By this point German combat effectiveness had reached its apogee; in training, doctrine, and fighting ability.
