Land mine invention by the Polish officer Józef Kosacki. His invention, known as the Polish mine detector, was used by the Allies alongside mechanical methods, to clear the German mine fields during the Second Battle of El Alamein when 500 units were shipped to Field Marshal Montgomery's Eighth Army. The Nazis used captured civilians who were chased across minefields to detonate the explosives. According to Laurence Rees "Curt von Gottberg, the SS-Obergruppenführer who, during 1943, conducted another huge anti-partisan action called Operation Kottbus on the eastern border of Belarus, reported that 'approximately two to three thousand local people were blown up in
8th Guards Combined Arms Army the Vistula river at Magnuszew. In 1945 the army was commanded by Lieutenant General Vasily Chuikov. It was part of Marshal Zhukov's 1st Belorussian Front. One of the cities which the Army took in its westward drive was Poznań, which the Army seized in January–February 1945. In a deliberate symbolic move the 8th Guards Army was then sent northwards to the center of the front, coming under command of 1st Belorussian Front; Stalin was determined that the Army that had defended Stalingrad would take part in the capture of Berlin (Battle of Berlin). On 2 May 1945, Chuikov took the