THE discovery of America opened up a new field of enterprise for those brave, reckless, ne'er-do-weel soldiers of fortune by whom the Old World was overrun. Adventurers sailed from various ports of Europe, under the command of audacious leaders, such as Balboa and Pizarro, whose daring spirit and enterprising disposition gave them authority over their companions. Numbers of women, imbibing the spirit of the times, accompanied those bands of adventurers--sometimes disguised in male attire, but more frequently in the garments of their own sex. When Cortez sailed from Cuba, in 1518, on that voyage which terminated in the conquest of Mexico, he was followed by six hundred soldiers, many of whom were accompanied by their wives. These Castilian dames, preferring to endure the hardships of a campaign than be separated from their husbands, and probably feeling curious to see for themselves those marvels of the New World about which all Europe was talking, in no way disgraced the name of Spaniard by any feminine timidity. In the camp before Mexico, which Cortez was besieging, 1521, it was their fortitude which kept up the spirit of the soldiers, who, repulsed in several assaults on the city, and suffering from famine, had become gloomy and despondent. Several examples have been preserved of the bravery displayed by these Spanish wives. One of them would frequently mount guard to relieve her tired husband; another, seeing the Spaniards repulsed in an attack, hastily donned a soldier's _escaupil_, snatched up a sword and lance, rallied the retreating Christians and led them once more against the Mexicans. Cortez had requested the women to remain behind, at Tlascala, but they proudly answered him that "It was the duty of Castilian wives not to abandon their husbands in danger, but to share it with them--and die with them if necessary." The name of one of these female warriors was Maria d'Estrada, who fought by the side of her husband through every campaign, displaying the same courage as her companions in arms. Another Spanish-American heroine was Catalina de Erauso, the "Monja Alferez," or Nun-Lieutenant. Her life was the most romantic that could be imagined. She has written her own history in pure and classic Spanish, displaying as much literary ability in its composition as, in her warlike career, she had shown heroic valor, mixed with savage cruelty.