The Army Group's 2nd Panzer Group under Colonel General Heinz Guderian and the 3rd Panzer Group under Colonel General Hermann Hoth decimated the Soviet frontier defenses, defeated all Soviet counter-attacks and encircled four Soviet Armies of the Red Army's Western Front near Bialystok and Minsk by 30 June. The majority of the Western Front was enclosed within, and the pockets were liquidated by 9 July. The Red Army lost 417,729 men against Wehrmacht casualties of somewhat over 12,157.[7]