Smoke Signal stars Dana Andrews as an army deserter who left because his late commanding officer was hell bent on starting an Indian war which he did. When the Indians went on the offense Andrews deserted them and is now a prisoner.
Now the commander is dead and Andrews is a prisoner at his fort. But that might not mean much as most of the fort is dead and the Utes are closing in. There one chance for the survivors and it means heading down the Colorado River which as yet is unexplored, especially around that Grand Canyon area.
One woman the late commander's daughter Piper Laurie, one trapper Douglas Spencer and a bunch of soldiers led by Captain William Talman who has a special reason for hating Andrews as his brother was killed in a battle with the Utes. But it's pretty clear that Andrews is the one guy who really knows what he's doing.
The film is mostly the journey down the Colorado River where we see who makes it and who doesn't. Only six are left in the boat at the end, you have to see which six.
Nice location cinematography and good ensemble performance by a veteran cast.