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 some east of Matruh, and at 21:20 he issued the orders for a withdrawal to Fuka. Confusion in communication led the division withdrawing immediately to the El Alamein position. X Corps, having made an unsuccessful attempt to secure a position on the escarpment, were out of touch with Eighth Army from 19:30 until 04:30 the next morning. Only then did they discover that the withdrawal order had been given. The withdrawal of XIII Corps had left the southern flank of X Corps on the coast at Matruh exposed and their line of retreat compromised by the cutting of the coastal