The movie adaptation is focused less on the adventures the Spartans had while sailing to Troy and more on the short stint of pre battle and end battle. The movie suggests the battle of Troy was over the course of a few weeks when per the Iliad it latest ten years. Now this battle has never been proven for accuracy and may have never happened. However the movie has a very direct sense of what and how the war was. It shows the layout of the city of Troy, the characters mentality and fondness or lack there of, of the characters. The way battles started seems quite accurate. Before a battle the opposing armies would taunt each other. After this the major warriors, or best of the army would duel each other. Depending on the outcome of this the battle would ensue. This is shown a few times in the movie. Once between Paris and Menelaus, which started the war. Paris surrendered and went to his brother's ankles. Hector protected Paris from being slaughtered. It shows the ships, blood, and garb the persons would wear in this time frame. Or does it?
The dates this war happened of approximately 1194-1185 (10 years) is during the bronze age. This plays a key role in the historical accuracy of it. The weapons, shields, and clothing for battle is all wrong. These items shown are closer to the dark ages.
The uniforms or garb of the ancient Greeks and Trojans where slightly less than