как то так.
Creation of this work is winnowed the events of start period of Second World War, when the comings German troops ran into the tanks of KV-1 on a battle-field. 37mm armour-piercers abandoned only dents on the armour of KV-1, 50mm shells were also unable to overcome the armour of tank, on tests Germans all the same succeeded to break through it from distance of 30m. Only the 88mm shells of zenithal instrument were able to contest with the armour of KV-1, as well as subcalibre 50mm shells which only began to appear in the German army.