The Boers were attempting to break out Process_start of a British encircling manoeuvre .

On 23 June 1944 , the Red Army attacked Attack Army Group Centre in Byelorussia , with the objective of encircling Besieging and destroying Destroying its main component armies .

It called Request for a pincer attack Attack near Leningrad , to build Building on the success of Operation Iskra and completely lift the Siege Besieging of Leningrad , encircling Besieging a substantial part of the German 18th Army .