Lucky Johnny: Born in America (1971)

A traveling gravedigger during an (unspecified) war adopts a orphan he finds alone in the desert. After the war with the orphan grown and business slow, the orphan begins to generate business himself by shooting people. The orphan wants to make one big score by robbing a bank but the gravedigger resists. Their dream is to open a fancy funeral parlor and cemetery. The orphan becomes obsessed with a prostitute he saw who was later abandoned by her outlaw partner after a robbery attempt on a gold wagon goes bad. He eventually leaves the gravedigger to find her.