The Iliad by Homer Book 12 Page 5

is madness for us to try and drive our horses across the trench; it will be very hard to cross, for it is full of sharp stakes, and beyond these there is the wall.

Our horses therefore cannot get down into it, and would be of no use if they did; moreover it is a narrow place and we should come to harm. If, indeed, great Jove is minded to help the Trojans, and in his anger will utterly destroy the Achaeans, I would myself gladly see them perish now and here far from Argos; but if they should rally and we are driven back from the ships pell-mell into the trench there will be not so much as a man get back to the city to tell the tale. Now, therefore, let us all do as I say; let our squires hold our horses by the trench, but let us follow Hector in a body on foot, clad in full armour, and if the day of their doom is at hand