Does "they alighted" mean " Scarlett and Mammy got off (from the train)"?

Context:


CHAPTER XXXIII
A COLD WIND was blowing stiffly and the scudding clouds overhead were the deep gray of
slate when Scarlett and Mammy stepped from the train in Atlanta the next afternoon. The depot had
not been rebuilt since the burning of the city and they alighted amid cinders and mud a few yards
above the blackened ruins which marked the site. Habit strong upon her, Scarlett looked about for
Uncle Peter and Pitty’s carriage, for she had always been met by them when returning from Tara to
Atlanta during the war years. Then she caught herself with a sniff at her own absent-mindedness.
Naturally, Peter wasn’t there for she had given Aunt Pitty no warning of her coming and, moreover,
she remembered that one of the old lady’s letters had dealt tearfully with the death of the old nag
Peter had “ ‘quired” in Macon to bring her back to Atlanta after the surrender.