Having been adopted as a protégé by Pavel Sudoplatov, Fisher took part in Operation Scherhorn (Операция Березино) in August 1944, "the most successful radio deception game of the war".
Fisher was having been adopted as a protégé by Pavel Sudoplatov. Fisher took part in Operation Scherhorn (Операция Березино) in August 1944, "the most successful radio deception game of the war".