Complex sentence: Odysseus arranged then further for the sounding of a battle horn, which prompted Achilles to clutch a weapon and show his trained disposition; with his disguise foiled, he was exposed and joined Agamemnon's call to arms among the Hellenes.
Split into simpler sentences: Odysseus arranged then further for the sounding of a battle horn, which prompted Achilles to clutch a weapon and show his trained disposition. With his disguise foiled, he was exposed and joined Agamemnon's call to arms among the Hellenes.