0730-balance of the day: Troopers of the U.S. 13th Cavalry pursue retreating Villistas into Mexico. Major Frank Tompkins, sought permission against the rules of engagement, to cross the border and was granted the same by Slocum. His troops advanced past Palomas and fifteen miles into Mexico, where their pursuit is arrested by the Villista defense. As he had only a portion of the Camp Furlong garrison he was badly outnumbered in the pursuit but nonetheless engaged the Villista rear guard four times, inflicting heavy casualties on them. When his advance was finally checked, he withdrew into the United States.
The raid leaves part of Columbus in ruins and will launch the United States into a punitive expedition into Mexico against Villa's forces, and which would nearly lead to war with Mexico. Woodrow Wilson filled the vacant position of Secretary of War that very day.