31st Army may refer to:
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31st Group Army
The 73rd Group Army is a formation of China's People's Liberation Army Ground Force (PLAGF) subordinated to the Eastern Theater Command (ETC). The ETC's area of responsibility includes Taiwan, and the 73rd Group Army includes amphibious forces.
Th ...
, China
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31st Army (Soviet Union)
The 31st Army was a field army of the Red Army during the Second World War.
Formation
The army was formed on July 15, 1941, in the Moscow Military District. It was ordered to create a defensive line along Ostashkov - Selizharovo - Rzhev. The a ...
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Thirty-First Army (Japan)
The was an corps, army of the Imperial Japanese Army during World War II.
History
The Japanese 31st Army was formed on February 18, 1944 under the Imperial General Headquarters as a garrison force to contest landings by Allies of World War II, ...
, a unit of the Imperial Japanese Army
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