20th Army (Soviet Union)

The Army was first formed in the Orel Military District in June 1941.

On 22 June 1941 the Army was part of the Reserve of the Supreme High Command and was located west of Moscow.

[2] Committed as part of Western Front in defensive battles in Belarus, Smolensk, and Vyazma.

[3][failed verification] The Army HQ was disbanded having been encircled and destroyed in the Vyazma Pocket.

Source: Combat composition of the Soviet Army (BSSA) via tashv.nm.ru and Leo Niehorster Reestablished in November 1941 from Operational Group Liziukov.