"The Battle of China," series, explains why the Empire of Japan possessed such a strong
interest in ruling the disparate lands of China. In an attempt to break the will of the Chinese people in one massive assault, Japan invades Nanking and massacres forty thousand civilians. The attack results in an opposite effect, galvanizing the Chinese resistance and unifying the separate lands into a single Chinese identity.
While the Japanese take control of all Chinese ports, hoping to cut off all resources from its victim, China's allies effectuate an engineering miracle. They construct the seven hundred mile long Burma Road over the mountains of Myanmar, and set up a constant caravan of trucks to ship food and materiel to the Chinese armies, keeping them alive.
Frustrated by their inability to conquer China, the Japanese turn their attention to the islands of the Pacific, and the United States.