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
Second Battle of El Alamein the Depression. The Axis advance was halted here in early July in the First Battle of El Alamein. The Eighth Army counter-offensives during July failed, as Rommel had dug in to allow his exhausted troops to regroup. Auchinleck called off all offensive action at the end of July to allow rebuilding the Eighth Army's strength. In early August, the British Prime Minister, Winston Churchill, and General Sir Alan Brooke—the Chief of the Imperial General Staff (CIGS)—visited Cairo and replaced Auchinleck as Commander-in-chief (C-in-C) Middle East Command with General Sir Harold Alexander. Lieutenant-General William Gott was appointed to command of the