The Second Battle of Sabine Pass took place on September 8, 1863, and was the result of a Union expedition into Confederate-controlled Texas during the American Civil War. It has often been credited as the most one-sided Confederate victory during the conflict.
During the summer of 1863, the president of Mexico, Benito Juárez, was overthrown and replaced by the emperor Maximilian, whose allegiance was with France. France had been openly sympathetic to the Confederate States of America earlier in the war, but had never matched its sympathy with diplomatic action. Now that a French government existed just south of the Rio Grande, the Confederates hoped to establish a fruitful route of entry for much-needed matériel.