DDV Available from Turner Classic Movie Channel web site
Early one morning last week (Nov. 2015) on Turner Classic Movies, I saw this movie listed, and in reading the synopsis, realized it was an earlier version of the John Wayne version, "3 Godfathers."
I DVR'd it, and was very glad I did. Much darker version that the John Wayne version, and Charles Bickford was wonderful
I searched TCM's website, and I don't see the movie listed on the schedule any time in the near future.
HOWEVER, they do have a DVD available for sale at $14.99. It's actually a double feature, with BOTH Hell's Heroes AND the 3 Godfathers - but it's not the John Wayne version, it's the "Three Godfathers," 1936 version with Walter Brennan, Chester Morris and Lewis Stone, directed by Richard Boleslawski.
Here's the link:
http://shop.tcm.com/hells-heroes-three-godfathers-double-features-dvd/detail.php?p=369209&ecid=PRF-TCM-100188&pa=PRF-TCM-100188