The book describes German subversive charge transporters controlled by both radio and wire. Some machines were specially designed for this purpose, some adapted, both German and captured machines were used. It tells about amphibious vehicles and unmanned reconnaissance tanks with a television camera. Since very little has been said about their combat use during the capture of Sevastopol, I added the story of Alexei Isaev from the book "The Battle of Sevastopol." Talk a little more about the Battle of Kursk.