Visible crew/equipment: The scene where Martin and Ethan watch the Cavalry ride in through the river, a car or truck is seen driving up a road to the right and comes to a stop.
Visible crew/equipment: In the scene where Scar is sitting with another renegade in front of a teepee, you can see the overhead lighting equipment very prominently.
Chosen answer: There was no cactus. A young inexperienced cavalry man, played by Patrick Wayne, constantly holds up his saber, which Ward Bond tells him to put away, before he hurts someone. After the battle, someone asks if he got injured by the Indians. Ward angrily replies "It wasn't the Indians" and looks at Patrick, who has a look of embarrassment.