Lately, I've developed the habit of waking up on Saturdays and checking up on AMC and TCM for a good movie to start the day with -- preferably a Western. (Not sure why I like Westerns best in the morning, but I guess it's the same reason why I prefer my film-noir after 9:00 p.m.)
I don't often find them, but this one may not be a landmark exactly, but it is a real treat. Stewart gives yet another great performance, this time as a sort of cynical and corrupt, but far more sane, cousin to John Wayne's Uncle Ethan in "The Searchers." And the rest of the cast, including a nicely low key Richard Widmark, do just as well in less overtly meaty roles. As others have commented, this film delves far more into that films premise of what happens when whites are held captive by Comanches.
In a sense, I really don't feel educated enough to have an opinion on this section of the film. On the one hand, there's a nasty undercurrent of sexual fear -- it's assumed at one point that Comanche braves will rape white women without too much thought. (It's put a bit explicitly for a film made in 1961 -- you can see the Hays code boys stirring uncomfortably there.) And life under them is portrayed as being a slow death. And then there is the issue of what you might call sexual contamination, which is an brought up even more overtly here than in "The Searchers." We're never quite sure where the filmmakers stand on this, but it's certainly a strong belief of the characters. (There are undercurrents in earlier Ford films, particularly "Stagecoach.")
As a good liberal/progressive type, I want to chalk this up to the racism of the past. At the same time, simply being a Native American doesn't turn people into angels. (Even the overly long and "poetic," but still moving, "Dances with Wolves" bothered to depict a nasty Indian tribe as a contrast with the apparently saintly Lakotas.)
I honestly don't know whether or not this type of thing actually went on, but, if you think about the "rape camps" of the Balkans or the practices of Japanese soldiers during World War II (the rape of Nanking, the "comfort women," etc.) and you can see how this sort of thing probably transcends all cultural boundaries. Once war makes murdering our fellow humans necessary, all the old boundaries are dropped and sexual torture might not seem so unthinkable even to those of us who like to think of ourselves as civilized.
It would be interesting, just once, if a really well-researched film was done on these themes, really showing both sides of the struggle in as accurate a manner as possible in a fictional story. Maybe some sort of collaboration between Sherman Alexie and, I don't know, Walter Hill. (I'd suggest John Milius, but they'd probably start talking politics and things could get ugly!)
Of course, it probably wouldn't be half as good as "Two Rode Together" (let alone "The Searchers")...but it'd be worth a try!