Army Group Centre's northern flank was defended by the Third Panzer Army under the command of Georg-Hans Reinhardt; the lines ran through marshy terrain in the north, through a salient round the city of Vitebsk, to a sector north of the main Moscow–Minsk road, held by the Fourth Army.
It was opposed by the 1st Baltic Front of Hovhannes Bagramyan, and Chernyakhovsky's 3rd Belorussian Front, who were given the task of breaking through the defences to the north and south of Vitebsk and cutting off the salient.

It was in this sector that Soviet forces had their greatest initial gains.
The Soviet 43rd Army broke the defences of the German IX Corps, to the north of Vitebsk, within hours, pushing towards the Dvina river.
South of the city, the VI Corps' 299th and 197th Infantry Divisions simply disappeared beneath an overwhelming Soviet assault, with a particularly effective breakthrough by the 5th Army at the junction of the 299th and 256th Infantry Divisions' sectors.
By 24 June, the German position in Vitebsk itself, held by the central LIII Corps of four divisions, was already serious, as Soviet forces were clearly intending to encircle the city, but no reserves were available to shore up the collapsing defences, and requests to withdraw German troops to the second defense lines, the 'Tiger' line, were denied by the Oberkommando des Heeres.

By 25 June Third Panzer Army was disintegrating.
In the north, IX Corps had been broken and pushed over the Dvina, blowing the bridges during its retreat.
In the south much of the VI Corps had been annihilated, and its southernmost divisions (the 299th and 256th Infantry Divisions) had become separated from the remainder of Third Panzer Army by heavy attacks around Bogushevsk, where they attempted to make a final stand in the 'Hessen' line, the third defence zone.
The Soviet 43rd and 39th Armies were now converging behind Vitebsk, trapping the entire LIII Corps.
LIII Corps' commander, Friedrich Gollwitzer, had transferred the 4th Luftwaffe Field Division south-west of the city in order to spearhead a breakout, while the 246th Infantry Division attempted to hold open the Dvina crossings.
 OKH however, denied all requests for complete evacuation: the 206th Infantry Division was ordered to stay in the city and fight to the last man.

Soviet plans in this sector met with overwhelming success.
The 4th Luftwaffe Field Division was cut off and destroyed by the 39th Army on the evening of 25 June, and by the next day the 246th Infantry and 6th Luftwaffe Field Divisions, fighting their way along the road from Vitebsk, had also been encircled.
Hitler insisted that a staff officer be parachuted into Vitebsk to remind Gollwitzer that the trapped 206th Infantry Division should not withdraw; Third Panzer Army's commander, Reinhardt, was only able to get this decision reversed by insisting on being parachuted in himself if Hitler continued to order it.
By the evening Soviet forces were fighting their way into the city and Gollwitzer finally ordered the garrison to withdraw too, in defiance of the Supreme High Command of the German Army orders.

By 27 June LIII Corps had been dispersed, its 30,000 men being almost all killed or taken prisoner; a group of several thousand from the 4th Luftwaffe Field Division initially managed to break out, but was liquidated in the forests west of Vitebsk.
The remnants of IX Corps were retreating to the west, falling back on Polotsk with the 6th Guards Army in pursuit: VI Corps was also largely destroyed.
Third Panzer Army had been effectively shattered within days, and Vitebsk liberated: even more significantly, a huge gap had been torn in the German lines to the north of Fourth Army in the former VI Corps sector.
Army Group Centre's northern flank was defended by the Third Panzer Army under the command of Georg-Hans Reinhardt; the lines ran through marshy terrain in the north, through a salient round the city of Vitebsk, to a sector north of the main Moscow–Minsk road, held by the Fourth Army. It was opposed by the 1st Baltic Front of Hovhannes Bagramyan, and Chernyakhovsky's 3rd Belorussian Front, who were given the task of breaking through the defences to the north and south of Vitebsk and cutting off the salient.
It was in this sector that Soviet forces had their greatest initial gains. The Soviet 43rd Army broke the defences of the German IX Corps, to the north of Vitebsk, within hours, pushing towards the Dvina river. South of the city, the VI Corps' 299th and 197th Infantry Divisions simply disappeared beneath an overwhelming Soviet assault, with a particularly effective breakthrough by the 5th Army at the junction of the 299th and 256th Infantry Divisions' sectors. By 24 June, the German position in Vitebsk itself, held by the central LIII Corps of four divisions, was already serious, as Soviet forces were clearly intending to encircle the city, but no reserves were available to shore up the collapsing defences, and requests to withdraw German troops to the second defense lines, the 'Tiger' line, were denied by the Oberkommando des Heeres.
By 25 June Third Panzer Army was disintegrating. In the north, IX Corps had been broken and pushed over the Dvina, blowing the bridges during its retreat. In the south much of the VI Corps had been annihilated, and its southernmost divisions (the 299th and 256th Infantry Divisions) had become separated from the remainder of Third Panzer Army by heavy attacks around Bogushevsk, where they attempted to make a final stand in the 'Hessen' line, the third defence zone. The Soviet 43rd and 39th Armies were now converging behind Vitebsk, trapping the entire LIII Corps. LIII Corps' commander, Friedrich Gollwitzer, had transferred the 4th Luftwaffe Field Division south-west of the city in order to spearhead a breakout, while the 246th Infantry Division attempted to hold open the Dvina crossings.  OKH however, denied all requests for complete evacuation: the 206th Infantry Division was ordered to stay in the city and fight to the last man.
Soviet plans in this sector met with overwhelming success. The 4th Luftwaffe Field Division was cut off and destroyed by the 39th Army on the evening of 25 June, and by the next day the 246th Infantry and 6th Luftwaffe Field Divisions, fighting their way along the road from Vitebsk, had also been encircled. Hitler insisted that a staff officer be parachuted into Vitebsk to remind Gollwitzer that the trapped 206th Infantry Division should not withdraw; Third Panzer Army's commander, Reinhardt, was only able to get this decision reversed by insisting on being parachuted in himself if Hitler continued to order it. By the evening Soviet forces were fighting their way into the city and Gollwitzer finally ordered the garrison to withdraw too, in defiance of the Supreme High Command of the German Army orders.
By 27 June LIII Corps had been dispersed, its 30,000 men being almost all killed or taken prisoner; a group of several thousand from the 4th Luftwaffe Field Division initially managed to break out, but was liquidated in the forests west of Vitebsk. The remnants of IX Corps were retreating to the west, falling back on Polotsk with the 6th Guards Army in pursuit: VI Corps was also largely destroyed. Third Panzer Army had been effectively shattered within days, and Vitebsk liberated: even more significantly, a huge gap had been torn in the German lines to the north of Fourth Army in the former VI Corps sector.
Vitebsk–Orsha Offensive