shield, as well as the helmet that protected his head. A Norman might fight on foot and often did so, but he would still need a trio of horses to transport him to the battle: a destrier to fight on if it was a mounted assault, alighter cavalry horse as the means of getting from one place to another – also essential for foraging and reconnaissance – and at least one sturdy packhorse to carry his equipment.
All needed to be fed, watered and rested for part of the day; drive them too hard and they became useless. Given his guess at the numbers, he was trying to work out the quantity of supply and as usual, when faced with a difficult calculation, he turned to his cousin Geoffrey, his tutor in all things, for an answer.
‘William, I have taught you this, I am sure.’
‘I have a figure in my mind for hay,’ William lied, ‘but I wish to see if I have counted right.’
‘How can you be wrong, it is so simple? If there are two thousand horses and each requires thirteen librae of hay per day, you need some four hundred bushels, always assuming that there will be a certain amount of pasturage and that oats are provided by the Master Marshall on the route of march.’
‘Libra? You use the Roman measure?’
‘What else would I use?’
‘I was thinking of Charlemagne’s livres.’
‘So what is it in Charlemagne livres?’ Geoffrey asked.
‘Different,’ William replied, hastily, ‘very different. Take care as we cross the river.’
Fording the Epte for those towards the rear ofthe column was more taxing than for the men who had gone earlier: not the entry, but most certainly the churned up exit, as the faggots laid on the bank originally had long come apart, leaving a widening sea of earth turned to sludge by hundreds of hooves, mixed with liberal quantities of dung from horses nervous on the slippery ground.
The de Hautevilles were forced to dismount and lead their animals up the slimy bank, becoming covered from head to foot in what they were wading through as they dragged reluctant mounts though the muddy ground, not least from what was kicked up by hooves. Tancred’s mood was not improved when his two younger boys decided the destroyed riverbank provided an excellent mud slide, albeit one which washed them clean when they ended up in the dirty brown water, that parental ire made worse when he tried to kick them for a second attempt and ended up in an undignified heap.
‘Welcome, Father,’ called William, ‘to the land of the Franks.’
Picking himself up, a figure now a uniform brown from head to toe, and slithering to where William stood, he nodded and patted his son on the back. ‘It’s enough to make a man curse his neighbour, which is expressly forbidden in Scripture.’
A swiftly swinging foot took William’s legs and, landing on the muddy ground, he could not avoidslithering down into the river to where Robert and Serlo were now engaged in a bout of water-fighting, his journey accompanied by the bellow of his mollified father, as well as the laughter of his brothers.
‘Or to put in his place a disrespectful son, which is not. Now get up here the three of you and let us be on our way.’
Given the water that had dripped off those ahead, it was a good distance till the footing under their animals was dry, by which time they had dismounted again to walk, giving their horses some necessary relief and, once the mud had dried, for it was a warm summer day, trying to brush themselves clean. The army halted at noon and, after taking on food and drink, men who had travelled in their own lands in leather jerkins now donned their hauberks and helmets; they were no longer in Normandy, with no precise knowledge of where their enemy lay – it was time to be ready to fight.
Their route was still dictated by the River Seine, running between bluff white cliffs topped by dense forests on one bank, and rolling open country to the south, their aim to reach the great fortress of La Roche-Guyon, which for