By the beginning of July, the front line had been torn open at the seam of German Army Group Centre and Army Group North, roughly on a line from Vitebsk to Vilnius. While a large part of the Soviet force was employed to reduce the German pocket east of Minsk, following the Minsk offensive operation, the Soviet high command (Stavka) decided to exploit the situation along the breach to the north, by turning mobile formations towards the major traffic centre of Vilnius, in eastern Lithuania. For the German high command, it became imperative to hold Vilnius, because without it would become almost impossible to re-establish a sustainable connection between the two German army groups, and to hold the Red Army off outside East Prussia and away from the Baltic Sea shores.