Chiefly, a Red Army is a communistarmy. A list of all the past and present known Red Armies in existence throughout the world is below (and may need some maintenance):
The (Workers' and Peasants') Red Army of the Soviet Union.
The People's Liberation Army of the People's Republic of China, originally known as the (Chinese) Red Army.
The name Red Army was also a term used by John Garang during the Second Sudanese Civil War. It was the name given to the large groups of boys who fled to Ethiopia between 1983 and 1990. In the Ethiopian refugee camps, the Red Army trained with the Sudan People's Liberation Army, or the SPLA, to fight for Southern Sudan's Independence.
Red Army , football hooligan firm of Manchester United FC
Persepolis F.C.,the Football team of the Tehran, is often called "Red Army"
HC CSKA Moscow, the ice hockey team of the Central Sports Army Club, Moscow, is often called "Red Army" by English speakers