During the European Renaissance, an age marked equally by revolutionary thought and constant warfare, it was armies, rather than philosophers, who shaped the modern European nation state. "Mobile cities" of mercenaries and other paid soldiers-made up of astonishingly diverse aggregations of ethnicities and nationalities-marched across the land, looting and savaging enemy territories.In the 15th century, Poland hired German, Spanish, Bohemian, Hungarian, and Scottish soldiers. Later, Sweden fought in Muscovy with Irish, English, Scottish, French and German troops. Units of Croats, Germans, Walloons, Albanians, and especially Swiss served in French armies. In the Netherlands, Italians and Spaniards fought beside Irishmen, Germans, Dalmatians, and Walloons. Regiments of Swiss pikemen fought for Spain, France, and Venice, as well as for German and Italian princes.