Hell's Heroes (1929)

When three men (Charles Bickford, Raymond Hatton and Fred Kohler) rob a bank in New Jerusalem, a cashier (Edward Hearn) is killed and the three bandits escape into the desert where they lose their horses in a sandstorm. Finding a woman (Fritzi Ridgeway) who gives birth, they are made godfathers only to learn that the baby's father was the man they killed in the holdup. When the woman dies they head back on foot to New Jerusalem, but they have little water and it is 40 miles.