<prompt> Qedela umusho olandelayo:  <response>: Impi yasebusika ka-1939-1940 phakathi kweSoviet Union neFinland, njengelungu leqembu lomsizi wenhloko ye-Main Military-Engineering Administration ekwakhiweni kokuqiniswa, uKarbyshev waya emgqeni ongaphambili ukuze eluleke amabutho ngokusekelwa kwezobunjiniyela ekuphuleni uMannerheim Line. 