Slight correction: Stalin never robbed a train. Georgia pre-1917 did not have many passenger trains (the Russian Empire did not industrialize its peripheral territories very well). Stalin did help in robbing a stagecoach full of money headed to a bank, though. https://en.wikipedia.org/wiki/1907_Tiflis_bank_robbery
Slight correction: Stalin never robbed a train. Georgia pre-1917 did not have many passenger trains (the Russian Empire did not industrialize its peripheral territories very well). Stalin did help in robbing a stagecoach full of money headed to a bank, though. https://en.wikipedia.org/wiki/1907_Tiflis_bank_robbery