 Complete the following phrase:  Four Russian armored columns were ordered to move in a sudden and co-ordinated attack, and, after defeating all defenders, were to meet at the Presidential Palace in the center of the city. The key to the plan was all four columns reaching the center of the city simultaneously. However, the 19th Motorized Rifle Division MRD was late arriving to the group West, commanded by Major General Ivan Babichev, and the bloated column could barely move, with disputed reports of friendly artillery fire. In the east, units of Major General Vadim Orlovs 104th Airborne Division did not join the 129th MRR from the Leningrad Military District after they moved on Grozny; and were subsequently hit by friendly artillery fire, the 129th regiment was badly demoralised and retreated the next day without accomplishing much. Lieutet General Lev Rokhlins forces of the 8th Corps from the city of Volgograd 