τάφροιο διήλασε μώνυχας ἵππους
Crossing the ditch is once again a spatial indication that Odysseus and Diomedes have truly arrived back safely—and successfully, since Odysseus leads the horses of Rhesos with them. As we saw at 10.194, the summoned Achaean leaders move across the ditch to hold the council. This movement indicates that they are then on the offensive and thus presages the night’s mission. Here, we notice that they all have remained there while Diomedes and Odysseus were on their mission. That solidarity among the whole group is made explicit in the next line as they cross back together, exulting in what Diomedes and Odysseus have accomplished. Compare 10.414–416, where Dolon assumes that Hektor is still at the place of the Trojan council while he is on his mission.