Sabine Pass was important as a point of arrival and departure for blockade runners. With the fall of Vicksburg in July 1863, followed by the Battle of Gettysburg, it was obvious that the Civil War was now not going well for the Confederacy, an invasion of Texas appeared to be imminent. It was suspected that the Union Army would attempt an invasion of Texas via Sabine Pass, because of its value as a harbor for blockade runners and because about 18 miles northwest was Beaumont, on the railroad between Houston and the eastern part of the Confederacy.