Camp Lockett was a United States Army military post in Campo, California, east of San Diego, and north of the Mexican border.

Camp Lockett has historical connections to the Buffalo Soldiers due to the 10th and 28th Cavalry Regiments having been garrisoned there during World War II.

[15][16] On December 4, 1875, a gunfight between the citizens of Campo and a group of Mexican bandits, who had earlier killed the former Governor of Baja California Antonio Sosa[17] in a robbery, took place at Gaskill Brothers' Stone Store.

[19] Company G of the 1st Cavalry Regiment was sent by order of Major General John Schofield to San Diego to provide armed assistance to the area.

The company was sent east to assist under the command of Captain Reuben F. Bernard, a veteran of the Modoc War; this dispersed the would-be assailants.

[22] In the summer of that same year, a group of Native Americans came north from Mexico and began living off the Larkin Family's cattle.

This brought reprisal when the chief of the Native Americans asked for protection from the Alcalde, who subsequently assembled a posse and drove the cattle south of the border.

In that year, about forty Yaquis were pressed into the Mexican Army, and later mutinied in Ensenada; in doing so they killed three people including their Captain's wife, and began to flee northward to obtain horses to travel back to where they came from.

Although a farm was raided, the infantry's presence prevented the group from continuing further into the United States, and they were eventually subdued by Mexican Militia forces south of Jacumba.

Later on in that same year the force at Campo would be reduced to that of a platoon, while the rest of the Troop moved to Camp Lawrence J. Hearn at Palm City, near present-day Imperial Beach.

Original infrastructure included roads and streets, a sewage treatment plant, incinerator, and water supply system.

Importantly, during this time several buildings from the pre-Army era were converted to military support uses, including the 1885 Gaskill Stone Store.

This command consisted primarily of administrative personnel responsible for planning the defense of southern Arizona and California; they fell under General John L. DeWitt, whom surveyed what would be Camp Lockett in 1940.

Most of the new construction centered on additional stable and troop housing areas for the 28th Cavalry Regiment one mile north of the original encampment.

[37] The convalescent hospital remained active at Camp Lockett until June 1946, when the facility closed and the installation was declared surplus.

The hospital area contains administrative buildings, barracks, wards, mess halls, storehouses, dispensary, and civilian employee housing.

Pre-Lockett buildings utilized by the Army during the period of significance include the Gaskill Brothers Stone Store and the Ferguson Ranch House.

A total of 47 features resulting from original barracks, day rooms, mess halls, storehouses, officers’ quarters, chapel, and stables are present.

The Italian Prisoners of War Shrine, which is located about a mile north of the main encampment, also contributes to the district as a landscape element.