World War II

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The Second Phase: Expansion of the War

In the year after the fall of France, the war moved toward a new stage—world war. While conducting subsidiary campaigns in the Balkans, in North Africa, and in the air against Britain, Hitler deployed his main forces to the east and brought the countries of southeastern Europe (as well as Finland) into a partnership against the USSR.

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1

U.S. Aid to Britain

The United States abandoned strict neutrality in the European war and approached a confrontation with Japan in Asia and the Pacific Ocean. U.S. and British conferences, begun in January 1941, determined a basic strategy for the event of a U.S. entry into the war, namely, that both would center their effort on Germany, leaving Japan, if need be, to be dealt with later.

In March 1941 the U.S. Congress passed the Lend-Lease Act and appropriated an initial $7 billion to lend or lease weapons and other aid to any countries the president might designate. By this means the United States hoped to ensure victory over the Axis without involving its own troops. By late summer of 1941, however, the United States was in a state of undeclared war with Germany. In July, U.S. Marines were stationed in Iceland, which had been occupied by the British in May 1940, and thereafter the U.S. Navy took over the task of escorting convoys in the waters west of Iceland. In September President Franklin D. Roosevelt authorized ships on convoy duty to attack Axis war vessels.

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2

Friction Between the U.S. and Japan

Meanwhile, American relations with Japan continued to deteriorate. In September 1940 Japan coerced Vichy France into giving up northern Indochina. The United States retaliated by prohibiting the exportation of steel, scrap iron, and aviation gasoline to Japan. In April 1941, the Japanese signed a neutrality treaty with the USSR as insurance against an attack from that direction if they were to come into conflict with Britain or the United States while taking a bigger bite out of Southeast Asia. When Germany invaded the USSR in June, Japanese leaders considered breaking the treaty and joining in from the east, but, making one of the most fateful decisions of the war, they chose instead to intensify their push to the southeast. On July 23 Japan occupied southern Indochina. Two days later, the United States, Britain, and the Netherlands froze Japanese assets. The effect was to prevent Japan from purchasing oil, which would, in time, cripple its army and make its navy and air force completely useless.

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3

The German Invasion of the USSR

The war’s most massive encounter, dubbed Operation Barbarossa, began on the morning of June 22, 1941, when slightly more than 3 million German troops invaded the USSR. Although German preparations had been visible for months and had been talked about openly among the diplomats in Moscow, the Soviet forces were taken by surprise. Stalin, his confidence in the country’s military capability shaken by the Finnish war, had refused to allow any counteractivity for fear of provoking the Germans. Moreover, the Soviet military leadership had concluded that blitzkrieg, as it had been practiced in Poland and France, would not be possible on the scale of a Soviet-German war; both sides would therefore confine themselves for the first several weeks at least to sparring along the frontier.

The Soviet army had 2.9 million troops on the western border and outnumbered the Germans by two to one in tanks and by two or three to one in aircraft. Many of its tanks and aircraft were older types, but some of the tanks, particularly the later famous T-34s, were far superior to any the Germans had. Large numbers of the aircraft were destroyed on the ground in the first day, however, and their tanks, like those of the French, were scattered among the infantry, where they could not be effective against the German panzer groups. The infantry was first ordered to counterattack, which was impossible, and then forbidden to retreat, which ensured their wholesale destruction or capture.

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a

Initial German Successes

For the invasion, the Germans had set up three army groups, designated as North, Center, and South, and aimed toward Leningrad, Moscow, and Kyiv. Hitler and his generals had agreed that their main strategic problem was to lock the Soviet army in battle and defeat it before it could escape into the depths of the country. They disagreed on how that could best be accomplished. Most of the generals believed that the Soviet regime would sacrifice everything to defend Moscow, the capital, the hub of the road and railroad networks, and the country’s main industrial center. To Hitler, the land and resources of the Ukraine and the oil of the Caucasus were more important, and he wanted to seize Leningrad as well. The result had been a compromise—the three thrusts, with the one by Army Group Center toward Moscow the strongest—that temporarily satisfied Hitler as well as the generals. War games had indicated a victory in about ten weeks, which was significant because the Russian summer, the ideal time for fighting in the USSR, was short, and the Balkans operations had caused a 3-week delay at the outset.

Ten weeks seemed ample time. Churchill offered the USSR an alliance, and Roosevelt promised lend-lease aid, but after the first few days, their staffs believed everything would be over in a month or so. By the end of the first week in July, Army Group Center had taken 290,000 prisoners in encirclements at Białystok and Minsk. On August 5, having crossed the Dnieper River, the last natural barrier west of Moscow, the army group wiped out a pocket near Smolensk and counted another 300,000 prisoners. On reaching Smolensk, it had covered more than two-thirds of the distance to Moscow.

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