Complex sentence: After Achilles, Ajax is the most valuable warrior in Agamemnon's army (along with Diomedes), though he is not as cunning as Nestor, Diomedes, Idomeneus, or Odysseus, he is much more powerful and just as intelligent.
Split into simpler sentences: After Achilles, Ajax is the most valuable warrior in Agamemnon's army (along with Diomedes). Though he is not as cunning as Nestor, Diomedes, Idomeneus, or Odysseus, he is much more powerful and just as intelligent.