Battle of South Guangxi
The Battle of South Guangxi (traditional Chinese: 桂南會戰; simplified Chinese: 桂南会战; pinyin: Guìnán Huìzhàn) was one of the 22 major engagements between the National Revolutionary Army and Imperial Japanese Army during the Second Sino-Japanese War. In November 1939, the Japanese landed on the coast of Guangxi and captured Nanning. In this battle, the Japanese successfully cut off Chongqing from the ocean, effectively severing foreign aid to China's war efforts by the sea, rendering Indochina, the Burma Road and The Hump the only ways to send aid to China. The Chinese launched several major offensives that maximized Japanese casualties. A majority of the conflicts occurred in the fighting for Kunlun Pass.
The Battle of South Guangxi (traditional Chinese: 桂南會戰; simplified Chinese: 桂南会战; pinyin: Guìnán Huìzhàn) was one of the 22 major engagements between the National Revolutionary Army and Imperial Japanese Army during the Second Sino-Japanese War.
In November 1939, the Japanese landed on the coast of Guangxi and captured Nanning. In this battle, the Japanese successfully cut off Chongqing from the ocean, effectively severing foreign aid to China's war efforts by the sea, rendering Indochina, the Burma Road and The Hump the only ways to send aid to China.
The Chinese launched several major offensives that maximized Japanese casualties. A majority of the conflicts occurred in the fighting for Kunlun Pass. With the success of the Vietnam Expedition in September 1940, the Japanese were able to cut China off from Indochina. Now only the Burma Road and The Hump remained, ending the costly necessity of occupying Guangxi. By November 1940, Japanese forces had evacuated from Guangxi except from some coastal enclaves.

Order of battle
See also
Air Warfare of WWII from the Sino-Japanese War perspective

Sources
Hsu Long-hsuen, Chang Ming-kai (1972). History of The Sino-Japanese War (1937–1945). Translated by Wen Ha-hsiung (2nd ed.). Taipei, Taiwan Republic of China: Chung Wu Publishing. pp. 311–318, 325–327, map 18.
Map 18
Perry–Castañeda Library Map Collection, China 1:250,000, Series L500, U.S. Army Map Service, 1954- . Topographic Maps of China during the Second World War.
These two maps cover the area where most of the fighting went on in the Guangxi campaign:
Lai-Pin nf49-1, has the Kunlun Pass just above where the road from Nanning enters the map:
Nanning nf49-5

References

Bibliography