The Far East
The devastation of World War II in China was inflicted on a country that was already suffering from the economic ills of overpopulation, underdevelopment, and a half-century of war, political disunity, and unrest. The territory occupied by Japanese forces was roughly equivalent to that occupied by the Axis in Europe and the period of occupation was longer. That area of China unoccupied by the Japanese was virtually cut off from the outside world after the Japanese conquest of Burma in early 1942, and its economy continually tottered on the brink of collapse. In both areas, famines, epidemics, and civil unrest were recurrent, much farmland was flooded, and millions of refugees fled their homes, some several times. Cities, towns, and villages were laid waste by aerial bombardment and marching armies. The transportation system, poor to begin with, was thoroughly disrupted. Most of the limited number of hospitals and health institutions in China were destroyed or lost.
In India famine was recurrent, and the Indian economy was severely strained to support the burden the Allied military authorities placed upon it. The Philippines suffered from three years of Japanese occupation and exploitation and from the destruction wrought in the reconquest of the islands by the Americans in 1944–45. The harbour at Manila was wrecked by the retreating Japanese, and many portions of the city were demolished by bombardment.
In Japan the U.S. Strategic Bombing Survey found the damage to urban centres comparable to that in Germany. In the aggregate, 40 percent of the built-up areas of 66 Japanese cities was destroyed, and approximately 30 percent of the entire urban population of Japan lost their homes and many of their possessions. Hiroshima and Nagasaki suffered the peculiar and lasting damage done by atomic explosion and radiation.
John Graham Royde-Smith The Editors of Encyclopaedia Britannica