The Punitive Expedition spent the rest of 1916 chasing Villa around Mexico, but never catching him. By that time the Mexican government had grown tired of allowing US troops into Mexico. War seemed imminent after Mexican government troops attacked US troops in Carrizal, Mexico. But focus was being aimed at Europe and the war there. When the Mexican government asked the US to remove all troops from Mexico, Wilson complied and ordered them out. Only for troubles to flare up again in February when The Zimmerman Note was released. America however would not declare war on Mexico, but focus everything at defeating Germany.
Pershing would go on to lead US forces in Europe. Some notable occurrences during the Expedition were the use of automobiles and planes, both firsts for the US military. America's first mechanized attack was led by Lieutenant George S. Patton, which would give him the taste for tanks that he would become famous for.
Pancho Villa had launched the attack in anger after the US pulled support from him and backed the Mexican government. He would later succeed in helping overthrow the Mexican government and then retire from politics. In 1923 his enemies caught up to him though, and he was murdered.