Continuity mistake: After Achilles kills Hector, Achilles reaches for the plain rope end of the rope at the back of the chariot, which he ties to the chariot bar. When Achilles rides away while looking up in the close-up, in the next shot as the body is being dragged, the knot's excess rope now has a wide black tip at the end. (02:01:50)
Continuity mistake: When Achilles ties Hector's feet with the rope, the excess rope at the knot and the length of the rope between the chariot and Hector's feet changes while Hector's body is dragged by the chariot. In the first wide shot, as Achilles begins to drag him, its length is twice as long than in the following close-up. (02:02:00)
Continuity mistake: Close to the end of the film when we see Priam in Achilles' tent talking to him, in one shot you see Achilles looking down at his feet or away from him, in the following shot, he is looking directly at Priam. (02:02:25)
Continuity mistake: When Priam goes to Achilles to beg for Hector's body, he removes his hood as he steps into the tent. In all of the following shots the hood lies multiple ways upon his shoulder. (02:05:10)
Continuity mistake: When the priestess, Briseis, is standing on the beach about to return to Troy with King Priam, some of her hair is strewn across her chest. But in the next shot, it's suddenly all in place. Then a few shots later it's back across her chest again. Again later, before Briseis stabs Agamemnon, her hair is messy in the shot facing her, but in the next shot it's neat again. (02:10:40 - 02:27:40)
Continuity mistake: When Priam, Paris, Glaucus, et al, arrive at the beach to see the Greek's 'Trojan' horse, the men who lie dead all over the sand change position. Particularly, in the first shot as it pans towards the horse, the two dead men in red lie on the sand in front of Priam a good distance away from the horse. In the next two close-ups of these men (the same two bodies), their positions are completely different. Then in the next wide shot, those two bodies are much closer to the huge 'Trojan' horse now. (02:16:00)
Continuity mistake: When the Trojan rider finds the Greek fleet that are hidden below, in the wide shots this rider has very long curly black hair and his helmet has its decorative hair formed into a thin long twist as it hangs down from the top of the helmet. However, in the close-ups of the rider, he has very short brown hair and all the helmet's decorative hair hangs down thick and loose. (02:18:20)
Continuity mistake: After the Trojan rider finds the hidden Greek fleet, he is hit with three arrows in his torso. In the close-up there are two arrows above and one just below them, but in the wide shot the three arrows are aligned in a straight row. (02:18:35)
Continuity mistake: When the Greeks climb out of the 'Trojan' horse, the palm leaves lie differently on the ground around the 'Trojan' horse, in consecutive shots. (02:18:50)
Continuity mistake: As the Greeks start emerging from the 'Trojan' horse, two small staircases in the distance, to the right, is seen here and in the close-up of Achilles just as he reaches the ground. Later, after a close-up of the large white statue falling towards the camera, two shots later the 'Trojan' horse stands in the foreground and right behind the running Trojans and Greeks are those two small staircases. However in this shot the 'Trojan horse is much, much closer to that side of the temple square. (02:19:10 - 02:22:40)
Continuity mistake: After the Greeks climb out of the 'Trojan' horse, some run to the front gate. There is a long rope hanging on the left side of the gate, the base of the left stone pillar that holds the flame is aligned with the edge of the huge gate's door frame and the pillar stands perfectly upright. However, as the camera pans to the left, when the soldiers start to run up the stairs on the left, the rope is gone, the actual tall stone pillar with flame is moved at least two feet and it now stands very crookedly. (This has nothing to do with camera angles.) (02:19:20)
Continuity mistake: After Odysseus, Achilles and the other Greeks climb out of the 'Trojan' horse, Odysseus and others head for the front gate. In the first wide shot of the front gate there are Trojan guards asleep on both sides. In the following close-up of these guards, their positions and the positions of things around them differ most significantly, like for example the fire pit at the feet of the guards on the right moves at least five feet, and then when the Greeks kill them the fire pit moves again. (02:19:20)
Continuity mistake: When the Greeks are at Troy's walls during the fight scenes the shadows cast keep changing direction. For example, when they charge Troy at night, in one shot as they run outside the city walls their shadows are cast to their right, but in the wide shot it's cast directly in front of them. (02:20:00)
Continuity mistake: When the Greeks begin their rampage within the walls of Troy, a Trojan is flipped over a roof and lands on a thatched roof under him. The top thatch differs between the first close-up and second wide shot. (02:21:10)
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)
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)
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)
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)
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)
Answer: He was warning the other soldiers that Achilles was coming.