With Poitiers 1356, Osprey's Campaign series has now covered all the "classic" battles of the Hundred Years War (the other titles are Crecy, Agincourt and Orleans). Osprey's medieval expert Dr. David Nicolle provides an excellent summary of the Black Prince's raid into France in 1356 and the resultant Battle of Poitiers. As usual, Nicolle's work is erudite, if a bit short on humanity and military insight.
Dr. Nicolle begins Poitiers 1356 with a very good introduction that outlines how the English had established themselves in southwest France in Gascony, and the impact of the Black Death on military operations. The author explains how the English launched deep penetration raids from their coastal enclaves; the raids were designed to disrupt the French economy and to undermine the legitimacy of the French monarchy. It was the raid in 1356 by the heir to the English throne, the Black Prince, that led to the Battle of Poitiers. In the section on opposing commanders, the author provides capsule biographies on the Black Prince and five other English leaders, and the French King John II and five other French leaders. The section on opposing armies is a bit overly brief, providing only the barest details on the composition of either army (while Nicolle notes that estimates vary widely on the size of the French army, it would have been nice if he had provided some information on what these varying opinions said). Whatever the size of the French army, it is clear that the armies of Poitiers were smaller than previous armies in the Hundred Years War, primarily due to the Black Death. While Nicolle notes that the Black Prince's army was a mix of English and local Gascon mercenaries, he gives no clue as to the relative balance (how much was Gascon?). The author also outlines in the section on opposing plans that while the Black Prince sought to avoid battle, the French king's primary intent was to cut off and destroy the enemy invaders in a large battle.
Dr. Nicolle spends about twenty pages describing the Black Prince's raid from Bordeaux deep into central France, the gathering of the French army and its pursuit. It is clear that the French demonstrated superior operational art in outmaneuvering the English and cutting off their retreat near Poitiers. Although poor reconnaissance undermined the French tactical operations, the English were brought to battle according to the French operational plan. The author then spends about thirty pages describing the tactical conduct of the Battle of Poitiers on 19 September 1356. As Nicolle describes it, the Anglo-Gascons selected a good defensive position (with their backs to the woods blocking retreat?) behind a solid hedgerow and with flanks anchored on impassable marshes. The French had learned a few lessons from earlier defeats at the hands of English longbows so they elected to launch a massive frontal attack with three divisions in echelon of dismounted men-at-arms. The main attack was preceded by two unplanned cavalry charges on the flanks which were repulsed. In short, the first echelon was defeated and withdrew, the second echelon left the field without orders and the third echelon (with the French king) launched a final surge into the English line. Unlike Crecy, Poitiers had a considerable amount of close combat and the French came close to achieving at least a draw if not a victory. However, the Anglo-Gascon counterattack shattered the third echelon and captured the French king. Nicolle is a bit vague on losses: he notes that the French suffered about 3,000 dead and over 2,000 captured but does not mention Anglo-Gascon losses (other sources suggest about 2,000 killed and wounded or about 25% casualties, which indicates a fairly close battle). By any measure, Poitiers was a major military disaster for France.
Poitiers 1356 includes five 2-D maps (France from 1346-1355; Operations in France, January-August 1356; the French Assemble; the French Pursuit; France from Poitiers to the Treaty of Brétigny, 1360), three 3-D "Birds Eye View" maps (the French Mounted Charges; Attack of the French Main Body; the Anglo-Gascon counterattack) and three color battle scenes (the looting of Vierzon; English longbow men at Poitiers; the capture of King John II). Unfortunately, much of the tactical action is hidden in the crease of the full-page 3-D maps - a common problem with Osprey maps - and a zoomed-in 2-D map would have been better to display Anglo-Gascon dispositions behind the hedge. Like most Medieval battles, Poitiers was fought in a very small area and these 3-D maps are better designed for "larger" battles of the 18th or 19th Century (keeping in mind that no Medieval tactical weapons had ranges beyond a few hundred meters). The battle scenes by Graham Turner are excellent, but it would have been better to have an "action" scene of the French attack at Poitiers rather than the relatively bland scene of English looting. Dr. Nicolle also provides an excellent bibliography and good notes on the battlefield today.