The Battle of Puebla (Spanish: Batalla de Puebla; French: Bataille de Puebla), also known as the Battle of May 5 (Spanish: Batalla del 5 de Mayo) took place on 5 May 1862, near Puebla de los Ángeles, during the second French intervention in Mexico. French troops under the command of Charles de Lorencez repeatedly failed to storm the forts of Loreto and Guadalupe situated on top of the hills overlooking the city of Puebla, and eventually retreated to Orizaba in order to await reinforcements. Lorencez was dismissed from his command, and French troops under Élie Frédéric Forey would eventually take the city, but the Mexican victory at Puebla against a better equipped[4] force provided patriotic inspiration to the Mexicans.
The anniversary of the victory is primarily celebrated in the Mexican state of Puebla,[5][6][7][8] where the holiday is celebrated as El Día de la Batalla de Puebla (English: The Day of the Battle of Puebla).[9][10][11] There is some limited recognition of the holiday in other parts of the country. In the United States, Cinco de Mayo has evolved into a holiday celebration of Mexican heritage.
^ abcdefClodfelter, M. (2017). Warfare and Armed Conflicts: A Statistical Encyclopedia of Casualty and Other Figures, 1492–2015 (4th ed.). Jefferson, North Carolina: McFarland. p. 304. ISBN978-0-7864-7470-7.
^The following sources are mentioning that Zaragoza was heading 12,000 troops : see The Cinco de Mayo and French Imperialism – Hicks, Peter, Fondation Napoléon, and General Gustave Léon Niox book, Expédition du Mexique : 1861–1867, published in 1874 by Librairie militaire de J. Dumaine, p. 162 Read online
^"Cinco de Mayo". Mexico Online: The Oldest and most trusted online guide to Mexico.