Happy Cinco de Mayo, in whatever language you speak. Spanish for the fifth of May, is a voluntarily observed holiday that commemorates the Mexican army's unlikely victory over French forces at the Battle of Puebla on May 5, 1862, under the leadership of General Ignacio Zaragoza Seguín. It is celebrated primarily in the state of Puebla and in the United States.While Cinco de Mayo has limited significance nationwide in Mexico, the date is observed in the United States and other locations around the world as a celebration of Mexican heritage and pride. Whatever meaning it has for you, enjoy the excuse to down many tequila shots, margaritas, frozen or on the rocks and all the Mexican food you can eat! Salud!