The Battle of Palo Alto was fought on May 8, 1846, during the Mexican-American War. It took place near present-day Brownsville, Texas, and was the first major battle of the conflict. The American forces, led by General Zachary Taylor, faced the Mexican army commanded by General Mariano Arista. The battle ended in a decisive victory for the Americans, showcasing their superior artillery and tactics. Following the battle, the American troops advanced further into Mexican territory, leading to subsequent engagements. The victory at Palo Alto boosted American morale and solidified Taylor's reputation as a military leader, eventually contributing to his election as the 12th President of the United States.