The war split the majority of the world's nations into two opposing military alliances: the Allies and the Axis. It involved the mobilization of over 100 million military personnel, making it the most widespread war in history, and placed the participants in a state of "total war", which erased the distinction between civil and military resources and resulted in the complete activation of a nation's economic, industrial, and scientific capabilities for the purposes of the war effort. Over 70 million people, the majority of them civilians, were killed, making it the deadliest conflict in human history.
Blitzkrieg is a popular name for an offensiveoperational-levelmilitary doctrine which involves an initial bombardment followed by the employment of motorized mobile forces attacking with speed and surprise to prevent an enemy from implementing a coherent defense. The founding principles of these types of operations were developed in the 20th century by various nations, and adapted in the years after World War I, largely by the GermanWehrmacht, to incorporate modern weapons and vehicles as a method to help avoid the stalemate of trench warfare and linear warfare in future conflicts. The first practical implementations of these concepts coupled with modern technology were instituted by the Wehrmacht in the opening theatres of World War II.The strategy was particularly effective to Germany in the invasions of Western Europe and initial operations in the Soviet Union. These operations were dependent on surprise penetrations, general enemy unpreparedness and an inability to react swiftly enough to German offensive operations.
A battleship is a large, heavily armoredwarship with a main battery consisting of the largest calibre of guns. Battleships are larger, better armed, and better armored than cruisers and destroyers.Battleship design continually evolved to incorporate and adapt technological advances to maintain an edge. The word battleship was coined around 1794 and is a shortened form of line-of-battle ship, the dominant wooden sailing warship during the Age of Sail. The term came into formal use in the late 1880s to describe a type of ironclad warship, now referred to as pre-dreadnought battleships. In 1906 the launching of HMS Dreadnought heralded a revolution in battleship design, and battleships constructed subsequently were referred to as dreadnoughts. Battleships were a potent symbol of naval dominance and national might, and for decades the battleship was a major factor in both diplomacy and military strategy. The global arms race in battleship construction in the early 20th century was one of the causes of World War I, which saw a clash of huge battle fleets at the Battle of Jutland. The Naval Treaties of the 1920s and 1930s limited the number of battleships but did not end the evolution of design. Both the Allies and the Axis Powers deployed battleships of old construction and new during World War II.
The Battle of the Santa Cruz Islands, October 26, 1942, sometimes referred to as the Battle of Santa Cruz or in Japanese sources as the Battle of the South Pacific (南太平洋海戦), was the fourth carrier battle of the Pacific campaign of World War II and the fourth major naval engagement fought between the United States Navy and the Imperial Japanese Navy during the lengthy and strategically important Guadalcanal campaign. In similar fashion to the battles of Coral Sea, Midway, and the Eastern Solomons, the ships of the two adversaries were rarely in direct visual range of each other. Instead, almost all attacks by both sides were mounted by carrier or land-based aircraft.In an attempt to drive Allied forces from Guadalcanal and nearby islands and end the stalemate which had existed since September 1942, the Imperial Japanese Army planned a major ground offensive on Guadalcanal for October 20–October 25, 1942.
Image 36Germany invaded Poland on 1 September 1939 which directly led to the Anglo-French declaration of war on Germany on 3 September. The Soviet Union joined Germany's invasion of Poland on 17 September. (from Causes of World War II)
Image 37March or April 1938: Jews are forced to scrub the pavement in Vienna, Austria. (from The Holocaust)
Image 41Italian Social Republic (RSI) as of 1943 in yellow and green. The green areas were German military operational zones under direct German administration. (from Diplomatic history of World War II)
Image 60Jews from Carpathian Ruthenia on the selection ramp at Auschwitz II, c. May 1944. Women and children are lined up on one side, men on the other, waiting for the SS to determine who was fit for work. About 20 percent at Auschwitz were selected for work and the rest gassed. (from The Holocaust)
Image 69British Prime Minister Neville Chamberlain and Hitler at a meeting in Germany on 24 September 1938, and Hitler demanded the immediate annexation of Czechoslovak border areas. (from Causes of World War II)
Image 721935 poster of the puppet state of Manchukuo promoting harmony among peoples. The caption reads: "With the help of Japan, China, and Manchukuo, the world can be in peace." (from Diplomatic history of World War II)