In 1937 a group of idealistic British volunteers sailed from England to fight the dark threat of dictatorship in Spain. In the olive groves of Jarama, near Madrid, they achieved the first victory against Franco's army. It was Fascism's first defeat. Hardly remembered today, it proved a crucial military turning point in the fight against Fascism. For the first time, Ben Hughes reconstructs the battle in a vivid blow-by-blow account, and considers its fascinating aftermath.