Visible crew/equipment: When the Greeks start to burn Troy, at one point in a close-up a pretty Trojan stuntwoman falls from a landing to the ground and her knee pads are visible as she falls. (01:21:15)
Deliberate mistake: During the battle scenes at the gates of Troy, the bodies that lie on the ground are rubber or something similar; people trample over them and they bounce. (01:21:25)
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)
Audio problem: When Agamemnon and the Greeks are retreating, Odysseus shouts, "Back to the ships!" in a close-up while he rides with Agamemnon on his chariot, but his mouth is not in sync with the words; nor is Agamemnon's when he shouts the same in the previous wideshot (not his close-up). (01:21:55)
Revealing mistake: When the soldiers' bodies are being collected in front of Troy's gate, after the battle, the pattern of the real stone wall (the set) on the left of the gate and all the soldiers that stand atop this wall, delightfully repeats, over and over, on the CG stone wall farther to the left. (01:23:30)
Other mistake: After the battle outside Troy's walls, the Trojans rout the Greeks and Hector begins to ride back towards the city. In the final shot where Hector is riding away from the camera, if you look closely, you can see Greek soldiers standing among the Trojans, still equipped with their distinctive helmets/shields. (01:23:40)
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: 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: In the morning, while Achilles watches Briseis sleep, her arm extends way over the edge of the bed in the wide shots facing her, yet in the shots facing the doorway her position differs and even her hand doesn't reach the edge of the bed. (01:33:05)
Continuity mistake: When King Priam, Hector and the elder people are arguing about what to do about the Greeks, in the front view Hector is standing in the center of the edge of the pool of water, but when Priam stands up the shot changes to a back view and he is standing near the corner instead. (01:36:10)
Continuity mistake: When the Trojans attack the Greeks on the beach with burning balls of twine (or some similar material) at dawn, Hector is seen watching the carnage. He then starts to beat on his shield with his spear and his two generals begin to walk up to him from the rear. The shot cuts to Odysseus for about two seconds and then back to Hector. The two generals then again begin to walk up to him also beating their shields. (01:36:30)
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)
Revealing mistake: In Achilles' tent, while Achilles tells Briseis that she is his guest and not his captive, the distinctive tan lines of the actress' bikini top are clearly visible as Achilles holds her. (01:37:15)
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)
Deliberate mistake: During the Trojan attack on the Greeks at the beach, before Hector and "Achilles" have at it, there are two separate close-ups of Hector's sword slicing across a man's face, who promptly spins around and spews blood. This particular man is enjoyed twice in two takes of the same shot, just before and after Odysseus' close-ups. Then as if that's not enough, a few shots later this spewing man is actually seen a third time, but this time from another angle. (01:42:30)
Revealing mistake: At the start of the shot facing Patroclus (dressed as Achilles), as Hector's blade is up against his throat, then slices it, the ridged bottom of the fake latex throat that Garrett Hedlund (Patroclus) wears is visible, when he arches his head back. (01:43:25)
Continuity mistake: The quantity of blood on Patroclus' neck, when Hector removes his helmet, changes between the shots. (01:43:55)
Deliberate mistake: Numerous times throughout the film, when the men draw their swords from the cloth/wood/leather lined underside of their shields, which is plainly visible in many shots, the loud metallic rasping sound is dramatically heard. It is even heard in many other instances, such as when Hector removes the blade from Patroclus' neck or when Achilles takes the sword out of the sand, after Eudorus tells him of Patroclus' death. (01:47:00)
Continuity mistake: The cuts on Hector's face change and the one over Hector's left eyebrow actually changes direction, as well as other characteristics in many shots. When he shows his wife the tunnel, the top of the cut points towards the left side of his face, but when he stands at the gate and glances back at Helen, the top of the cut points up towards his right. (01:48:05 - 01:56:40)
Continuity mistake: When Hector says goodbye to Paris and kisses his forehead, the small decorative gold clasps and the very large clasp at the bottom of his hair are visible. Then when Hector says goodbye to Andromache and Scamandrius, the large clasp is a completely different one and the small clasps' positions differ. The clasps in Hector's, Paris', and others, hair change position in consecutive shots throughout the film. (01:55:00)
Answer: He doesn't yell any words, just an expression of anguish over his brothers death.