Unusually violent for its time?

I remember seeing this in theaters as the second half of a double bill with another feature that was the main reason my father and I were there. I forget what the main feature was, and I remember very little of THE OREGON TRAIL, but I do remember that as a kid I found this movie disturbing and unsually bloody and violent, particularly the climactic attack on the fort. I guess I was used to the less brutal violence of TV westerns. Am I misremembering this, or was it unusually violent for its time? I remember seeing someone die with an amount of blood that I had not seen in movies before that.