Revealing mistake: When the Greek's rampage Troy, a Trojan falls through a thatched roof. In the next shot a light haired Trojan male is thrown on top of a black haired male, and are attacked while they lie atop a stone landing. Then at the start of the following close-up, a lone light haired female falls to the ground from that very same stone landing, which is followed by a repeat performance in close-up, by the light haired male of the previous shot, with some differences in this take. (02:21:15)
Continuity mistake: As Troy burns, there is an overhead shot of Achilles walking along the side of the building. In the shot immediately prior to this one, of soldiers running to the right of the screen, the large legs of the white statue stand and the broken body lies on the ground. Many shots later, after Achilles starts to shout for Briseis, that same statue is just being pulled down, as the legs remain in place. Once again, many shots later, as Agamemnon shouts, "Burn it! Burn it all!" the same statue is being pulled down yet again in the distance. (02:21:30 - 02:22:35)
Deliberate mistake: Stable gates never open inwards. In two scenes after Achilles leaves the solder alive during the ravage of Troy, they do. This is probably because it is visually effective when soldiers kick gates from the outside to open them. Stable gates in all cultures open outwards so that in case of fire the animals can't block them. (02:22:05)
Deliberate mistake: Looking from the left side of the wooden horse at the temple which is being plundered and burnt, a soldier is stabbing a citizen in white robes in the middle of the steps. A second soldier chases another citizen in white past him on the right. Then moments later the same shot is seen from the right side of the wooden horse. Obviously, two cameras filming the same scene. (02:22:30 - 02:23:35)
Continuity mistake: Priam walks toward the edge of the balcony to see fire ravaging his city. In the shot prior to that one, Troy's center square (with the temple of Poseidon) is shown and behind the two large columns, the left and right tall doors at the top of the stairs are engulfed in flames, the center door is not. When Briseis runs from the galloping horse, in the very next shot of the square with the 'Trojan' horse, only the left door at the top of the stairs is engulfed in flames and the right and center doors are both perfectly intact, then of course as Agamemnon shouts, "Burn Troy!" the left and right are completely engulfed again. (02:22:40 - 02:23:30)
Continuity mistake: When Priam sees the city on fire, in the shot facing his back, he walks to the edge of the balcony. In the next close-up facing him, the large statue (the seated statue opposite the throne) and a particular white statue are a certain distance behind him. In earlier shots, including when Priam and Hector stand on the balcony, the distance between the balcony and the seated statue at the opposite end of the room is far greater. The statues are deliberately much closer, for the close-up on Priam's devastated expression. (02:22:50)
Revealing mistake: As Hector holds his son, the first warning gong is rung. In the next shot, when Hector hands the baby to Andromache, its small shiny bald head is quite a giveaway that it's really a doll in this shot (not visible on widescreen DVD). Later, Andromache holds her son, Scamandrius, when she finds Helen and Paris, as Troy burns. Aside from the fact that the door hits the back of the baby's head, he now has a bald shiny head, whereas he had hair in previous shots, so it's quite obvious in this shot that the baby is a doll once again. (02:23:05)
Audio problem: As Troy is burning, Andromache finds Helen and Paris, and says, "We must go!" then Helen says, "Paris! Paris!" but their lips do not match those particular words. (02:23:05)
Continuity mistake: When Andromache finds Helen and Paris while Troy burns, the position of the blanket (first uncovered then completely covered) over the baby and the ties of her cloak differ noticeably between shots. (02:23:10)
Visible crew/equipment: When the horse gallops down the corridor in the first shot, just after Achilles shouts for Briseis, equipment with a green light on top is visible, as it rolls in and out of shot on the left side of the screen, in front of the horse. (02:23:20)
Audio problem: While Troy burns, when the horse gallops down the corridor, as Briseis runs she shouts, "Paris!" and though her mouth continues to shout what looks like "Andromache!" no sound is heard. (02:23:20)
Continuity mistake: When Paris kisses Helen goodbye before she goes down the tunnel at the end, from behind him his head's tilted to his right, but as the angle changes and they break apart, it's now tilted to his left. (02:24:45)
Visible crew/equipment: After Paris says goodbye to Helen, Odysseus leads the Greek soldiers up the stairs. As Odysseus reaches the second set of stairs, he swings his sword at a Trojan in the close-up, to his left a soldier swings a bulb shaped weapon on a Trojan's head and blood flies out, but before he makes that swing the large 'blood sac' attached to the weapon is actually visible. (02:24:50)
Visible crew/equipment: While Troy burns, after Paris says goodbye to Helen, Odysseus runs up the stairs toward the palace gate. When he and the Greeks reach the second set of stairs, at the very start of the shot equipment is visible at the bottom stair (use slo-motion if necessary). (02:24:55)
Continuity mistake: When Odysseus and the Greeks reach the gates to the palace, before Glaucus shouts, "Soldiers of Troy, you men are warriors..." the long horizontal wood that is secured across the doors is visible. When the Greeks break through it is an entirely different piece of wood that splits. (02:25:05)
Revealing mistake: Paris' arrows have identical black plastic nocks at the end of each shaftment. (02:25:10)
Continuity mistake: When Glaucus, Paris and other Trojans stand at the ready, the Greeks break through the palace gates, stream into the room and begin to fight. However, after Paris runs up the stairs, pulls and releases the arrow to hit the soldier's neck, in this shot Glaucus and the Trojans stand on the opposite side facing the Greeks, they have not yet even begun to fight. (02:25:25)
Revealing mistake: After the Greeks break through the palace gates, Paris releases the first arrow into a soldier. As he begins to turn around, the bent dark arrow unbends at his neck at the start of the shot, before it becomes the straight lighter arrow. (02:25:30)
Visible crew/equipment: Paris releases the first arrow, after the Greeks break through the palace gate, and when the Greek soldier turns around, a piece of equipment is visible on the floor, as the Trojans move forward in this shot, (similar to the equipment at the stairs in the earlier shot). (02:25:35)
Revealing mistake: After the Greeks break into the palace throne room, there is a close-up and consecutive wide shot of a particular white statue being pulled down with two ropes, then smashes apart on the floor and water. However, in the next shot of Priam, he turns around and as the camera pans out, the very same statue is being pulled down yet again, albeit with very noticeable differences in this take of the same shot. (Each of the unique statues in the throne room is visible in earlier shots.) (02:26:15)
Answer: They didn't know the Greeks weren't bringing cavalry. The Greeks did use them and sometimes brought them by sea. It was there to stop a cavalry charge and to break up fighting formations.
LorgSkyegon