Every fall, the most feared cavalry the world has ever known, the Comanche Indians, would leave their home on the great plains and raid deep into Mexico taking horses, and humans, back with them. They followed an ancient trail that came to be known as the Great Comanche war trail. The Comanche were not prosperous until the Spanish introduced the horse which turned around the fortunes of an entire people. The Comanche Indians managed to convince the Spanish to help them defeat the Apache, which then opened up unfettered access to Mexico via the war trail. From the panhandle to the Rio Grande, the raiders followed a well-defined trail almost a mile wide at points. Famous springs and river crossings were used for centuries. Even today, you can drive the same trail used by traders, Indians, stagecoaches and travelers. The Great Comanche War Trail.