
already aroused strong criticism abroad, particularly in
the United States. When Japan demanded the right to
occupy airfields and exploit economic resources in French
Indochina in the summer of 1940, the United States
warned the Japanese that it would cut off the sale of oil
and scrap iron unless Japan withdrew from the area and
returned to its borders of 1931.
In Tokyo, the American threat of retaliation was
viewed as a threat to Japan’s long-term objectives. It badly
needed oil and scrap iron from the United States. Should
they be cut off, Japan would have to find them elsewhere.
Japan was thus caught in a dilemma. To obtain guaran-
teed access to natural resources that would be necessary to
fuel the Japanese military machine, Japan must risk being
cut off from its current source of raw materials that
would be needed in the event of a conflict. After much
debate, Japan decided to launch a surprise attack on
American and European colonies in Southeast Asia in the
hope of a quick victory that would evict the United States
from the region.
World War II
Q
Focus Question: What were the main events of World
War II in Europe and Asia?
Hitler stunned Europe with the speed and efficiency of the
German blitzkrieg, or ‘‘lightning war.’’ Armored columns
or panzer divisions (a panzer division was a strike force of
about three hundred tanks and accompanying forces and
supplies) supported by airplanes broke quickly through
Polish lines and encircled the bewildered Polish troops.
Conventional infantry units then moved in to hold the
newly conquered territory. Within four weeks, Poland had
surrendered. On September 28, 1939, Germany and the
Soviet Union officially divided Poland between them.
Europe at War
After a winter of waiting, Hitler resumed the war on April 9,
1940, with another blitzkrieg against Denmark and Norway
(see Map 25.1). One month later , on May 10, the Germans
launched their attack on the Netherlands, Belgium, and
France. The main assault through Lux embourg and the
Ardennes forest was completely unexpected by the French
and British forces. German panzer divisions wer e able to
break through the weak F rench defensive positions there and
race across northern France, splitting the Allied armies and
trapping F rench troops and the entire British army on the
beaches of Dunkirk. Only by heroic efforts did the British
achieve a gigantic evacuation of 330,000 Allied troops. The
French capitulated on J une 22. German armies occupied
about three-fifths of France while the French hero of World
War I, Marshal Henri P
etain, established an authoritarian
regime (known as Vich y France) ov er the remainder.
German y was now in control of western and central Eur ope,
but Britain still had not been defeated.
As Hitler realized, an amphibious in vasion of Britain
would be possible only if Germany gained control of the
air. At the beginning of August 1940, the L uftwaffe (the
German air for ce) launched a major offensive against
British air and naval bases, harbors, communication cen-
ters, and war industries. The British fought back doggedly ,
supported by an effective radar system that gav e them early
warning of German attacks. Nevertheless the British air
force suffered critical losses by the end of August and was
probably saved by Hitler’s change of strategy . In Septem-
ber, in retaliation for a British attack on Berlin, Hitler
ordered a shift from military targets to massive bombing
of British cities to break British morale. The British rebuilt
their air strength quickly and were soon inflicting major
losses on Luftwaffe bombers. By the end of September,
Germany had to postpone the invasion of Britain.
Although he h ad no desire for a two-front war, Hitler
became convinced that Britain was remaining in the war
only because it expected Soviet support. If the Soviet Union
were smashed, Britain’s last hope would be eliminated. Al-
though the invasion of the Soviet Union was scheduled for
spring 1941, the attack was delayed because of problems in
the Balkans. Hitler had alr eady obtained the political co-
operation of Hungary, Bulgaria, and Romania, but M usso-
lini’s disastrous invasion of Greece in October 1940 exposed
Hitler’s southern flank to British air bases in Greec e. To
secure his Balkan flank, German troops seized both Yugo-
slavia and Greece in April. Now reassured, Hitler turned to
the east and invaded the Soviet Union on June 22, 1941.
The massive attack stretched out along a 1,800-mile
front. German troops advanced rapidly, capturing two
million Soviet soldiers. By November, one German army
group had swept through Ukraine, while a second was
besieging Leningrad; a third approached within 25 miles
of Moscow, the Soviet capital. An early winter and un-
expected Soviet resistance, however, brought a halt to the
German advance. For the first time in the war, German
armies had been stopped. A Soviet counterattack in
December 1941 came as an ominous ending to the year
for the Germans. By that time, another of Hitler’s
decisions---the declaration of war on the United States---
turned another European conflict into a global war.
Japan at War
On December 7, 1941, Japanese aircraft attacked the U.S.
naval base at Pearl Harbor in the Hawaiian Islands. The
same day, other units launched additional assaults on
624 CHAPTER 25 THE CRISIS DEEPENS: WORLD WAR II