On July 7, 1937, Japanese troops engaged Chinese units at the Marco Polo Bridge near Beijing, leading to warfare between China and Japan. Japanese armies took Nanking, Han-k’ou (Hankow), and Canton despite vigorous Chinese resistance; Nanking was brutally pillaged by Japanese troops. To the north, Inner Mongolia and China’s northern provinces were invaded. On discovering that the Nationalist government, which had retreated up the Yangtze to Chungking, refused to compromise, the Japanese installed a more cooperative regime at Nanking in 1940.
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Foreign relations
In November 1936 Japan signed the Anti-Comintern Pact with Germany and later with Italy. This was replaced by the Tripartite Pact in September 1940, which recognized Japan as the leader of a new order in Asia; Japan, Germany, and Italy agreed to assist each other if they were attacked by any additional power not yet at war with them. The intended target was the United States, since the Soviets and Nazis had already signed a nonaggression pact in 1939, and the Soviets were invited to join the new agreement later in 1940.
