Saint Crispin's Day is celebrated on October 25th, honoring the feast day of Saint Crispin and his brother Saint Crispinian. According to tradition, they were Christian martyrs who lived during the Roman Empire and are known for their work as shoemakers. Their story emphasizes themes of faith and perseverance in the face of adversity. The day is also famously associated with the Battle of Agincourt in 1415, where the English army, led by King Henry V, achieved a remarkable victory against the French. This battle is immortalized in William Shakespeare's play "Henry V," where the king inspires his troops with a speech about camaraderie and honor.