Visible crew/equipment: When Sangre attacks the soldier and the man's rifle falls during the fight, the shot cuts to a close-up of the gun - and we can see several white blocking marks chalked on the floor beside it. (00:33:50)
Continuity mistake: The blood stain on Sangre's clothing disappears when Manolito borrows the outfit as a disguise. It reappears at the end just in time for Sangre to put the clothes back on again. (00:39:20)
Plot hole: The scriptwriter here apparently never saw earlier episodes in which it was well-established that Manolito spoke fluent Apache. In a scene where he attempts to sneak past two braves while disguised as an Apache, he suddenly can't speak the language when they challenge him.