Continuity mistake: While every other actor in this movie wears the same costume day and night, day after day, John Wayne's costume changes regularly, even between shots. For all daytime scenes, he wears an orange long-sleeved shirt with a contrasting blue neck-kerchief; in some night-time scenes, he wears a blue long-sleeved shirt with a contrasting yellow neck-kerchief; and sometimes his daytime neck-kerchief changes from blue to yellow in a matter of seconds, between shots.
Continuity mistake: When Lomax takes the first two bags of gold from the war wagon, John Wayne opens the gold, reaching in and some spills out. Next shot, putting it back in, none has spilled.