The Knight Who Saved England: William Marshal and the French Invasion, 1217 (General Military)

This is the fascinating story William Marshal who negotiated the brutal realities of medieval warfare and the conflicting demands of chivalric ideals, and who against the odds defeated the joint French and rebel forces in arguably the most important battle in midieval English history - overshadowing even Agincourt.
In 1217 England was facing her darkest hour, with foreign troops pillaging the country and defeat close at hand. But, at the battle of Lincoln, the seventy-year-old William Marshal led his men to a victory that would secure the future of his nation. Earl of Pembroke, right-hand man to three kings and regent for a fourth, Marshal was one of the most celebrated men in Europe, yet is virtually unknown today, his impact and influence largely forgotten.
In this vivid account, Richard Brooks blends colorful contemporary source material with new insights to uncover the tale of this unheralded icon. He traces the rise of Marshal from penniless younger son to renowned knight, national hero and defender of the Magna Carta.