First battle of Mexican War fought in South Texas

179 years ago on May 8th, 1846

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On this day in 1846, the battle of Palo Alto, the first major engagement of the Mexican War, was fought. At the site north of Brownsville, American forces under Gen. Zachary Taylor clashed with Mexican troops commanded by Gen. Mariano Arista. The battle, which began about 2:00 P.M. and lasted until twilight, resulted in a standoff. After darkness ended the action, both armies bivouacked on the battlefield. Of 3,461 troops that formed the Mexican Army of the North, Arista's commissary reported 102 killed, 129 wounded, and 26 missing, including deserters. The American army, which totaled over 2,200 soldiers, reported five dead and forty-three wounded. The Mexican army was decisively defeated the following day at the battle of Resaca de la Palma.

Related entries from the Handbook of Texas:

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Texas on this Day: 500 Years of History

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From Cabeza de Vaca's ship-wreck in 1528 through the Texas Revolution to present day—almost 500 years of recorded history—a myriad of significant events in Texas history have occurred. These events are arranged by day of the year to allow the reader to see into the past on any specific day.

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Commemorating 250 years of American independence through the stories, people, and places that shaped Texas and the nation.

As the United States approaches its 250th anniversary in 2026, Texans have a unique opportunity to reflect on the state’s role in the American story. Through exhibitions, programs, educational initiatives, and community events across Texas, Texas America250 encourages celebration, reflection, and commemoration at both local and statewide levels. At the Texas State Historical Association, we are proud to support this important moment through our mission-driven work in history education and public engagement, including Texas History Day, and we invite students, educators, and communities to explore this milestone in meaningful ways.

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Greg Abbott, Governor of Texas

Commemorating 250 years of American independence through the stories, people, and places that shaped Texas and the nation.

As the United States approaches its 250th anniversary in 2026, Texans have a unique opportunity to reflect on the state’s role in the American story. Through exhibitions, programs, educational initiatives, and community events across Texas, Texas America250 encourages celebration, reflection, and commemoration at both local and statewide levels. At the Texas State Historical Association, we are proud to support this important moment through our mission-driven work in history education and public engagement, including Texas History Day, and we invite students, educators, and communities to explore this milestone in meaningful ways.

On July 4, 2026, we will celebrate the 250th anniversary of the adoption of the Declaration of Independence and the birth of the greatest nation in the history of the world. “We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.” Long may these ideals live in the heart of every Texan and every American. May God bless all who have defended our freedoms that we enjoy each day. And God bless the United States of America.

Greg Abbott, Governor of Texas

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