b. V. "Friedenthal") of the Waffen-SS were granted the majority of the credit for the operation. Operation Long Jump "Operation Long Jump" was the alleged codename given to a plot to assassinate the "Big Three" (Joseph Stalin, Winston Churchill and Franklin Roosevelt) at the 1943 Tehran Conference. Hitler supposedly gave the command of the operation to Ernst Kaltenbrunner, chief of the RSHA, who, in turn, ceded the mission to Skorzeny. Knowledge of the whole scheme was presented to the Western Allies by Stalin's NKVD at the Tehran conference. The Soviets said they had learned about its existence from counter espionage activities against German intelligence. Their agents had found out the Nazis knew the time and place of this meeting because they had cracked a US naval code. According to the NKVD the assassination plot was foiled after they identified the German spies in Iran forcing Skorzeny to call off the mission due to inadequate intelligence. Following Tehran, the story was treated with incredulity by the British and Americans who dismissed it as Soviet propaganda. Skorzeny supported this view by stating in his post-war memoirs that no such operation ever existed. He said the story about the plans being leaked to Soviet spy Nikolai Kuznetsov by an SS-Sturmbannführer named Hans Ulrich von Ortel was a Soviet invention; Hans Ulrich von Ortel never existed. Skorzeny claimed his name was used only to add credibility to the story because the NKVD knew his renowned record as an SS commando would make the existence of such an operation more plausible. Raid on Drvar In early 1944, Sonderverband z.b.V. Friedenthal was re-designated SS-Jäger-Bataillon 502 with Skorzeny staying on as commander. They were assigned to Operation Rösselsprung, known subsequently as the Raid on Drvar. Rösselsprung was a commando operation meant to capture the Yugoslav commander-in-chief, Marshal Josip Broz Tito, who had also recently been recognized by the Allies as the Yugoslav prime minister. Marshal Tito led the Yugoslav Partisan resistance army from his headquarters near the Bosnian town of Drvar, in the center of a large area held by the Partisans. Hitler knew Tito was receiving Allied support and was aware that either British or American troops might land in Dalmatia along the Adriatic coastline with support from the Partisans. Killing or capturing Tito would not only hinder this, it would give a badly needed boost to the morale of Axis forces engaged in occupied Yugoslavia.