Greek Mythology's King Agamemnon is one of central characters in the legend of the Trojan War. Was he a real person though?

An Old Soldier remembers the ten-year war at Troy and the events which led up to it: Paris, Helen, Menelaus, Agamemnon, Priam, Achilles, Patroclus, Hector, Cassandra, Odysseus…and the wooden horse.

When Menelaus discovers Helen has eloped with Paris he issues an ultimatum to Troy: return Helen immediately or face war. Menelaus returns to find that Helen has gone to Troy with Paris.