Road to WW2 · 1938
Was Chiang’s ‘space for time’ a strategy or an excuse?
The seminar question: “Was Chiang’s retreat into the interior a strategy, or an excuse for defeat?”
A clash at the Marco Polo Bridge on 7 July 1937 grew into a general war neither government had ordered. After a major battle at Shanghai, Japan drove on to Nanjing, where its forces murdered prisoners and civilians. By late 1938 Japan held China’s great cities, but Chiang’s government had escaped inland to Chongqing.
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On 7 July 1937 Japanese and Chinese troops exchanged fire near the Marco Polo Bridge outside Peking. Local officers negotiated, but the fighting spread. To understand why, we have to look at what each side had learned from earlier encounters. Japanese field commanders had seen Tokyo accept an unauthorized advance at Mukden; Chinese leaders had seen concessions followed by further demands. Sending reinforcements offered each side security, while making the other more fearful.
The short answer
- Xi’an and the demand for resistance. Chiang had concentrated on fighting the Communists while Japan took Manchuria and Jehol and extended its influence in north China. In December 1936 the Manchurian marshal Zhang Xueliang, whose homeland Japan had occupied, helped kidnap him at Xi’an. Chiang’s release followed an agreement to cooperate with the Communists against Japan. The United Front was uneasy, but the commitment and Chinese opinion made another concession harder. Japanese planners expecting the earlier pattern misread the changed political ground.
- A command system that rewarded advances. Japanese officers at Mukden had acted on their own initiative and then seen Tokyo accept their success. A field commander considering another advance could expect reinforcements and approval afterward. Expansionists on the general staff believed a sharp blow might break Chinese resistance within three months. China’s size and capacity to go on fighting would frustrate that expectation.
- Why Chiang fought at Shanghai. Chiang put his modern divisions at risk from Japanese naval power when he chose to fight at Shanghai. He had a political purpose: the battle would take place beside the International Settlement, foreign factories and residents. Witnesses and threatened interests might bring China support. China gained sympathy, a Soviet aid treaty in August 1937 and later American credits, but no intervention sufficient to save the trained divisions from heavy losses. German advisers had spent a decade helping build those forces, and their loss mattered in the long struggle ahead.
- A war without a declaration. Japan described the conflict as the “China Incident” and avoided a declaration that might trigger American neutrality legislation. An arms embargo on both belligerents would affect Chinese supplies, while Japan continued to buy American oil and scrap. China also avoided declaring war, hoping to keep its supply channels open. The legal distinction allowed Washington to sympathize with China while American trade still supplied Japan. Chapter 10 follows the movement toward embargo.
THE TURNING POINT
The Marco Polo Bridge, 7 July 1937. A Japanese soldier was briefly missing when troops exchanged fire at the bridge. The encounter became a general war, but its outcome was not settled by that fact alone. Some historians consider the incident containable; others argue that Japanese policy in north China made another confrontation likely even if this one had been resolved. These judgments address different parts of the problem. The particular clash provided the occasion. Earlier advances, independent field commanders and Chinese determination to resist shaped the choices available when it occurred. This encounter could have been contingent while the conditions for further confrontations were already present.
What it changed
The war turns Japanese attention south. The China war absorbed about a million Japanese troops. Holding occupied territory required men and supplies, while the resources consumed exceeded those gained. By 1940 Tokyo’s leaders looked south for resources in Southeast Asia and ways to cut Chiang’s supply routes. Chapter 10 follows the decisions that carried this policy toward Pearl Harbor.
American opinion and policy. Americans learned of Nanjing, the sinking of the Panay and the bombing of Chinese cities. Such news helped turn opinion against Japan, and boycotts of Japanese silk followed. Roosevelt’s October 1937 “quarantine” speech tested support for pressure. Public sympathy moved ahead of government policy; embargo came years later.
Chinese resistance and the Allied war. China’s refusal to surrender kept large Japanese forces committed on the mainland throughout the war. After 1941 Churchill and Roosevelt could count that continuing resistance as an Allied asset. China ended the war among the “Big Four” and received a permanent seat on the Security Council.
The full answer, argued
The charge that retreat was an excuse has force. Nationalist armies lost major battles in 1937–38, and the retreat was often chaotic and callous. In June 1938 they breached the Yellow River dikes to slow Japan. Hundreds of thousands died by drowning or starvation; civilians who were not consulted paid for the delay. Yet the map also shows the logic of retreat. Japan could occupy cities and railways more easily than the countryside between them. Each advance lengthened supply lines and demanded garrisons, while the government that withdrew to Chungking was still fighting in 1945. Retreat helped deny Japan the quick surrender it expected. That military achievement leaves a moral question: who may decide that civilians should bear such suffering to preserve the possibility of resistance? Showing that the retreat helped China fight on does not answer it.
An interesting fact
When China’s coastal ports fell, a road through Burma became a lifeline for the government at Chungking. Around 200,000 laborers—including farmers, women and children using baskets and hoes—built roughly 1,150 kilometers from Lashio in British Burma across the Hengduan ranges to Kunming. The road opened in 1938 after about a year’s work, and trucks carried imports along it. Its importance made control of the route a diplomatic question: in 1940 Churchill closed it for three months under Japanese pressure.
This is the study layer of Second Sino-Japanese War, chapter 6 of The Road to War, 1931–1941; the full index of the atlas is here.
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