Arnold von Winkelried was a Swiss hero known for his role in the Battle of Sempach in 1386. He is celebrated for his bravery in a pivotal moment when he charged into the enemy lines, allowing his fellow soldiers to break through. This act of self-sacrifice is often seen as a symbol of Swiss unity and resistance against oppression. Winkelried's story has become a part of Swiss folklore, representing the fight for freedom and independence. His legacy is honored in various ways, including monuments and commemorations in Switzerland, where he is remembered as a national hero.