On 1 July 1941, under German instruction, the Hungarian "Carpathian Group" ("Karpat Group") attacked the 12th Soviet Army. Attached to the German 17th Army, the Karpat Group advanced far into Soviet Ukraine, and, later, southern Russia. At the Battle of Uman, fought between 3 and 8 August, the Karpat Group's mechanized corps acted as one half of a pincer that encircled the 6th Soviet Army and the 12th Soviet Army. Twenty Soviet divisions were captured or destroyed in this action.