The Soldier and the Lady (1937)

In the face of rebellion in Russia, Czar Alexander II sends soldier Michael Strogoff 2,000 miles away, with a critical message for Grand Duke Vladimir. On the train journey, Michael befriends a traveler and comes into contact with a mysterious spy, who both unexpectedly aid him in his quest. Once behind enemy lines, Michael is near his hometown and his mother, whom he must avoid in order to fulfill his mission.