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
First Battle of El Alamein to organise the defence of the western end of Ruweisat Ridge. The 1st Armoured Division had been sent to intervene at Deir el Shein. They ran into 15th "Panzer" Division just south of Deir el Shein and drove it west. By the end of the day's fighting, the "Afrika Korps" had 37 tanks left out of its initial complement of 55. During the early afternoon, 90th Light had extricated itself from the El Alamein box defences and resumed its move eastward. It came under artillery fire from the three South African brigade groups and was forced to dig in. On