The Mexican-American War established the reputation of Major General Zachary Taylor, resulting in his election as president of the United States. It also gave invaluable experience to young American officers who would play leading parts in the Civil War - among them, Ulysses S. Grant, George H. Thomas, and George G. Meade on the Union side and Robert E. Lee, Albert Sidney Johnston, Joseph E. Johnston, and Thomas J. "Stonewall" Jackson on the Confederate forces. Here are the battles from the Alamo to San Jacinto that ultimately led to a U.S. victory and vast expansion of its territory.