New York Opposition Long is a style of fencing where two opponents use long swords in a duel. The long sword is a type of European sword used during the Middle Ages and Renaissance for both defense and offense. The New York Opposition Long style is based on a system of techniques and principles developed in the 1930s by the New York Fencing Association. It emphasizes defensive fencing with the long sword, using parries, thrusts, and counterattacks to outmaneuver the opponent. There are four forms within the New York Opposition Long style: the long sword vs. long sword, short sword vs. long sword, pole arm vs. long sword, and sword and shield vs. long sword.