When Charles II returned home he began the search for a dynastic marriage. He fixed upon the Infanta of Portugal, Catherine of Braganza, whose dowry included the possession of Tangier, Bombay and valuable trade concessions. The Portuguese had been fighting for their independence from Spain for twenty years and needed alliances to tip the scales in their favor. In return for the concessions Charles agreed to send to Portugal a regiment of horse and two of foot, which provided an excuse to ship away the remnants of the Cromwellian armies that had not been disbanded at the Restoration. The prospect of service was at first well received - "Major-General Morgan drew forth his regiment of foot consisting of 1000 proper men besides officers, and made a short speech, acquainting them that his Majesty had been graciously pleased to design them for honorable service abroad. . . Whereupon they all with great acclamations of joy, cried out ' All, all, all. . ." There were also officers and men who had remained loyal to the crown to them Charles owed a debt of employment, Former Royalists therefore made up the balance of the regiment of horse - uncomfortable bedfellows for their former enemies.

The English and French regiments fought with courage and discipline at the series of major battles and sieges that followed, most of which have never been properly described. This is, therefore, the rediscovery of a lost episode in our military history. It was the English and French soldiers, under Schomberg's leadership, who proved the decisive factor in winning back Portugal's independence. But in return for their courage in battle, the English soldiers were rewarded with insults and want of pay. At the conclusion of peace in 1667, only 1,000 out of the 3,500 men who made up the force were left standing. 400 of these received what was effectively a death sentence: they were shipped to Tangier to join the fight against the Moors. The remainder returned to seek service in England or abroad - but places were hard to find. One veteran of the horse summed up the feelings of many - ". . . there was never a more gallant party went out of England upon any design whatever, than were that regiment of horse. . . they came into the country full of money and gallantry, and those which survived left it as full of poverty and necessity."

The author's detailed but lively text is fully supported by a range of illustrations and specially commissioned maps.