"Henri IV was a gifted commander who saw more potential in mounted troops than any other captain of his day and was able to derive most advantage from them in combat, despite his limited resources. His special genius for new ways of employing his mounted troops both in armament and deployment forced even recognized military figures, such as the duke of Parma, to be respectful or even fearful of his skill. The king's contribution to the tactical development of the mounted arm was not unique, for he borrowed widely from the ideas of Gaspard de Coligny, Francois de La Noue, and other soldiers of his day; yet he was innovative in the way he modified and further developed these ideas to make his mounted troops a formidable tactical force. Indeed, he had a special talent for recognizing in the military theories and practices of other commanders what would work or not work on the battlefield, and what had promise but needed some alteration to become effective. This ability, when combined with Henri's imaginative leadership, made his cavalry the envy of late sixteenth-century Europe."