The Battle of Sempach, also known as the Battle of "Seven Ballads" or the "Slashing of Sempach," took place in 1386 between Swiss Confederates and the forces of the Habsburg Duke Leopold III. The battle is renowned for being one of the most important and celebrated battles in Swiss history, with several synonyms used to describe the event. These synonyms include the Battle of Saint Margarethenberg, the Sempacher War, the Battle of Säbu, and the Sempach Campaign. Regardless of the name used, the battle remains a testament to the bravery and resilience of the Swiss people in the face of adversity.