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 Hector walks outside and speaks with Achilles at Apollo's temple, the large seated statue is behind them and its shoulders are a particular height and distance from the roof behind it. Later, when Achilles walks past that statue to raise his sword in victory to the Greeks on the beach below, the proximity and height between Achilles (who walks along the roof) and the statue, plus some of its characteristics differ greatly, e.g., there are two top stones behind the shoulder in the close-up, yet three in the wideshot. The differences are more apparent on VHS or fullscreen DVD. (00:48:20)
Continuity mistake: When Hector says goodbye to Andromache, before his duel with Achilles, in the shots facing Hector as they embrace his face is pressed onto Andromache's shoulder, but in the shots facing Andromache his face is higher up, beside her head. (01:55:15)
Continuity mistake: After Priam kisses and welcomes Helen to Troy, they all walk inside. In the next wide shot, when Andromache (Hector's wife) steps forward to greet Hector, there is nobody to her left in front of the large column. However, in the next close-up there are two people who stand beside her, directly in front of that column. (00:29:30)
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 Briseis stabs Agamemnon in the neck, a particular part of his neck is visible in the first shot once the blade is in, just before he grabs her wrist. In the shot facing Briseis, the turned handle in her hand is further back on Agamemnon's neck than it should be to make the clean, straight, vertical wound below his ear. When she pulls the blade out, the wound is also positioned in the area that was visibly clear of the blade in the first shot. (02:27:40)
Continuity mistake: When Thetis says, "Like the ones I used to make you when you were a boy. Remember?" she puts her hand in the water to pick up the sea shell and the bottom of her right sleeve gets soaked in the close-up. However, in the next shot as she turns to face Achilles, that sleeve is dry. Her clothing material darkens greatly when wet, note the bottom of her clothing as she stands in the water when Achilles first walks over. (More noticeable on VHS.) (00:24:40)
Continuity mistake: When Eudorus tells Achilles about Patroclus' death, Achilles slaps him so he falls to the ground and gets sand over half of his face. Most of the sand is still there when Achilles puts his foot on Eudorus' neck, but when the foot is removed, there is hardly any sand left on his face. (01:42:20)
Continuity mistake: In Phtia, as Achilles and Patroclus sword play, their positions as the duel with the wooden swords in relation to each other, and/or where they stand, change between shots. (00:21:20)
Continuity mistake: After Achilles rescues Briseis from the men that were going to brand her, he brings her to his tent. The blood on her face differs in the wide shots, semi close-ups and close-ups, before she touches her face with the wash rag. (01:28:25)
Continuity mistake: While Achilles stands on Apollo's temple stairs and then when Hector climbs them, the position of the bodies lying on the stairs differs between shots. (This does NOT refer to when Achilles walks out the back of the temple, where there are no bodies. Note that the temple's front and back have different types of statues, stairs...) (00:44:00)
Continuity mistake: When Helen sutures Paris' leg wound, as he lies on the bed, the collar on his shirt fits round his neck properly, yet in the next close-up it hangs down off his shoulder, though he does not move. (01:24:35)
Continuity mistake: When Briseis stabs Agamemnon in his neck, in the shot facing the king he grabs her bare wrist, but in the next shot facing Briseis, Agamemnon grips her arm over her blue sleeve. Then after a brief shot of Achilles, Agamemnon grips her bare wrist again. (02:27:40)
Continuity mistake: On the beach of Troy, the exterior of Achilles' tent is seen in quite a few shots. In the nighttime exterior shot of the tent, just before Briseis asks, "Am I still your captive?" all the rope wound around the tent, the hides, etc., are all entirely different. Then the next time the tent is seen it looks like it did in the previous shots. (01:37:10 - 01:45:30)
Continuity mistake: When Paris puts the necklace around Helen's neck, Helen's hair over his hand changes between shots. (00:13:05)
Revealing mistake: When Hector and his men are fighting the Greek army outside Troy's walls in the second battle, blood spurts up from the bodies lying on the ground, after "Apollonians! Now!" is shouted. It's very obvious that the blood does not come directly from the bodies. (01:21:25)
Revealing mistake: After Menelaus is killed the two armies clash. In the second close-up of the men fighting, when a Trojan slams a large club-like weapon into a Greek's face, the club end bends when blood spurts everywhere. (01:18:20)
Continuity mistake: On the Trojan beach, when the shields of Achilles and the Myrmidons are united in front of them, some of the arrows protruding from the shields disappear and reappear in consecutive shots. (00:40:25)
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: When Achilles and his Myrmidons line up on the beach and then bring their shields together, things located on the beach, surrounding them, ie large and small rock formations/boulders, wood, carts, etc., differ greatly from the previous and following shots. The way they form the tight group differs between shots as well. (00:40:25)
Answer: He was warning the other soldiers that Achilles was coming.