Only two actions in the book are pure invention: the initial attack on Hookton (though the French did make many such landings on the English coast) and the fight between Sir Simon Jekyll’s knights and the men-at-arms under Sir Geoffrey de Pont Blanc outside La Roche-Derrien. Other than those all the sieges, battles and skirmishes are lifted from history, as was Sir Geoffrey’s death in Lannion. La Roche-Derrien fell to escalade, rather than an attack from its riverside, but I wanted to give Thomas something to do, so took liberties with the Earl of Northampton’s achievement. The Earl did all that he is credited with in the novel: the capture of La Roche-Derrien, the successful crossing of the Somme at Blanchetaque ford, as well as his exploits in the battle of Crécy. The capture and sack of Caen happened very much as described in the novel, as did the famous battle of Crécy. It was, in brief, an horrific and terrifying period of history which is now recognized as the beginning of the Hundred Years War.

I thought, when I began reading for and researching the novel, that I would be much concerned with chivalry, courtesy and knightly gallantry. Those things must have existed, but not on these battlefields, which were brutal, unforgiving and vicious. The book’s epigraph, quoted from King Jean II of France, serves as a corrective; “many deadly battles have been fought, people slaughtered, churches robbed, souls destroyed, young women and virgins deflowered, respectable wives and widows dishonored; towns, manors and buildings burned, and robberies, cruelties and ambushes committed on the highways.” Those words, written some fourteen years after the battle of Crécy, justified the reasons why King Jean was surrendering almost a third of French territory to the English; the humiliation was preferable to a continuation of such ghastly and horrid warfare.

Set-piece battles like Crécy were comparatively rare in the long Anglo-French wars, perhaps because they were so utterly destructive, though the casualty figures for Crécy show that it was the French who suffered and not the English. Losses are hard to compute, but at a minimum the French lost two thousand men and the figure was probably nearer four thousand, most of them knights and men-at-arms. The Genoese losses were very high, and at least half of them were killed by their own side. The English losses were paltry, perhaps fewer than a hundred. Most of the credit must go to the English archers, but even when the French did break through the screen of arrows, they lost heavily. A horseman who had lost the momentum of the charge and was unsupported by other horsemen was easy prey to footmen, and so the cavalry of France was butchered in the mêlée. After the battle, when the French were seeking explanations for their loss, they blamed the Genoese, and there were massacres of Genoese mercenaries in many French towns, but the real French mistake was to attack in a hurry late on the Saturday afternoon instead of waiting until Sunday when they could have arranged their army more carefully. And, having made the decision to attack, they then lost discipline and so threw away their first wave of horsemen, and the remnants of that charge obstructed the better conducted second wave.

There has been a great deal of discussion about the English dispositions in the battle, most of it centering on where the archers were placed. Most historians place them on the English wings, but I have followed Robert Hardy’s suggestion that they were arrayed all along the line, as well as on the wings. When it comes to matters about bows, archers and their exploits, Mr. Hardy is a good man to heed.

Battles were rare, but the chevauchée, an expedition that set out deliberately to waste the enemy’s territory, was common. It was, of course, economic warfare—the fourteenth-century equivalent of carpet bombing. Contemporaries, describing the French countryside after the passage of an English chevauchée, recorded that France was “overwhelmed and trampled under foot,” that it was on “the verge of utter ruin” or “tormented and war-ravaged.” No chivalry there, little gallantry and less courtesy. France would eventually recover and expel the English from France, but only after she had learned to cope with the chevauchée and, more importantly, the English (and Welsh) archers.

The word longbow does not appear in the novel, for that word was not used in the fourteenth century (it is for the same reason that Edward of Woodstock, the Prince of Wales, is not called the Black Prince—a later coinage). The bow was simply that, the bow, or perhaps the great bow or the war bow. Much ink has been wasted discussing the origins of the longbow, whether it is Welsh or English, a medieval invention or stretching back to the neolithic, but the salient fact is that it had emerged in the years leading up to the Hundred Years War as a battle-winning weapon. What made it so effective was the number of bowmen who could be assembled in an army. One or two longbows might do damage, but thousands would destroy an army and the English, alone in Europe, were capable of assembling those numbers. Why? The technology could not be simpler, yet still other countries did not produce archers. Part of the answer is surely in the great difficulty it took to become an expert archer. It needed hours and years of practice, and the habit of such practice took hold in only some English and Welsh regions. There had probably been such experts in Britain since the neolithic (yew bows as long as the ones used at Crécy have been found in neolithic graves), but equally probably there were only a few experts, but for some reason or another the Middle Ages saw a popular enthusiasm for the pursuit of archery in parts of England and Wales that led to the rise of the longbow as a mass weapon of war, and certainly once that enthusiasm waned then the bow quickly disappeared from the English arsenal. Common wisdom has it that the longbow was replaced by the gun, but it is more true to say that the longbow withered despite the gun. Benjamin Franklin, no fool, reckoned the American rebels would have won their war much more swiftly had they been practiced longbowmen and it is quite certain that a battalion of archers could have outshot and beaten, easily, a battalion of Wellington’s veterans armed with smoothbore muskets. But a gun (or crossbow) was much easier to master than a longbow. The longbow, in brief, was a phenomenon, probably fed by a popular craze for archery that translated into a battle-winning weapon for England’s kings. It also raised the status of the infantryman, as even the dullest English nobleman came to realize that his life depended on archers, and it is no wonder that archers outnumbered men-at-arms in the English armies of the period.

I have to record an enormous debt to Jonathan Sumption, author of Trial by Battle, The Hundred Years War, Volume 1. It is a rank offense to full-time authors like myself that a man who successfully practices as a lawyer can write such superb books in what is, presumably, his “spare” time, but I am grateful he did so and recommend his history to anyone who wishes to learn more of the period. Any mistakes that remain are entirely my own.