Operational Group Ermakov

{{Expand Russian|Russian article title|date=August 2018}}

{{Infobox military unit|unit_name = Operational Group Ermakov|dates = |image = RIAN archive 76 On the battlefield.jpg|country = {{flag|Soviet Union}}|caption = 20th Army soldiers fighting as part of Operational Group Ermakov south of Dorogobuzh, 1 September 1941|branch = Red Army|type = Combined arms|size = Field army|battles = World War II

• Battle of Moscow|notable_commanders = Arkady Yermakov}}The Operational Group Ermakov was a grouping of three Field Armies of the Red Army, the 3rd, 13th, and 50th Armies. It fought during the Battle of Moscow on the Bryansk Front on the Eastern Front during World War II. It was named after its commander, then Major General Arkady Yermakov. Ermakov's command was controversial for his focus on offensive operations from mid August to late September 1941. Marshal Yeryomenko credited his command's actions for significantly weakening the strength of the German Attack Groupings. Conversely, General Sanalov criticized him for paying insufficient attention to the defense during this time, leading to later losses.Page 112, Boris Vadimovich Sokolov. Marshal K.K. Rokossovsky: The Red Army's Gentleman Commander. 2015,{{ISBN|1909982105}},{{ISBN| 9781909982109}} It was disbanded.