How was Odysseus recruited in The Iliad?

In "The Iliad," Odysseus is recruited to join the Greek forces in the Trojan War through a clever ruse. When the Greek leaders gather to decide how to respond to Helen's abduction, Odysseus pretends to be mad to avoid conscription. However, Palamedes tests his sanity by placing Odysseus's infant son, Telemachus, in front of a plow. Odysseus's instinct to save his son reveals his true identity, forcing him to join the war effort.