Red Army officers and SMERSH agents found Hitler's partially burned corpse near the Führerbunker after his suicide and conducted an investigation to confirm the events of his death and identify the remains which (along with those of Eva Braun) were reportedly secretly buried at SMERSH headquarters in Magdeburg until April 1970, when they were exhumed, completely cremated, and dumped in the Elbe river.
Later NKVD, SMERSH and GRU began training special groups of future partisans (effectively, special forces units) in the rear and dropping them in the occupied territories.
In the 1957 novel From Russia, with Love by Ian Fleming, protagonist James Bond fights his enemy, SMERSH-agent Donovan Grant, eventually killing him, while passing through the Simplon Tunnel by Orient Express.