"He rode through the McKenzie crossing of the Clear Fork of the Brazos River"

Ranald Slidell Mackenzie (July 27, 1840 – January 19, 1889)
Public DomainRanald Slidell Mackenzie (July 27, 1840 – January 19, 1889) - Credit: Library of Congress
The McKenzie crossing refers to Ranald Slidell Mackenzie, the United States Army officer who played a significant role in the Indian Wars.

In late September 1871, MacKenzie assembled his forces at the Clear Fork of the Brazos River, before setting forth in a northwesterly direction on October 3, 1871, hoping to find the Quahadi village, which housed the warriors led by the Comanche chief Quanah Parker. The subsequent Battle of Blanco Canyon would become a decisive battle in the U.S. Army’s campaign against the Comanche, marking the end of Comanche control over the heart of their Comancheria, and the beginning of the end of the Comanche as a free people.