The 10th Mechanized Corps was a formation in the Soviet Red Army during the Second World War. Initially formed in March 1941 in response the German victories of 1940 it was attached to the Leningrad Military District, & held in reserve near Leningrad fortified region in Soviet Union It was under the command of Major General I. G. Lazarev when the German Operation Barbarossa began in June 1941. It initially comprised the 21st and 24th Tank Divisions, & the 198th Mechanized Division. After the Invasion began the Leningrad Military District was renamed Northern Front, Commanded by Lieutenant General Markian M. Popov.