In the Borrego Valley Maneuver Area the US Marines built Camp Ensign at the site of the Ensign Ranch in Borrego Springs in 1943. Troops from San Diego came to the camp for training for two weeks. The training was in driving military trucks at night. The former Base Headquarters is now near the Borrego Springs Spa and Resort. The site was Ensign Ranch date palm orchards before the camp.[4][5]
Ensign Ranch Airfield
Ensign Ranch Airfield was a single northwest–southeast unpaved runway built-in 1943 just south of Camp Ensign to support the camp. There are no remains of the former field. The site is now part of the Borrego Springs Spa and Resort.33°13′59″N116°21′25″W / 33.233°N 116.357°W / 33.233; -116.357[6]
Borrego Hotel Target Area
About 3 miles south of the Borrego Valley Maneuver Area was the 222 acres Borrego Hotel Target Area. Borrego Hotel bombing target had three circles that the Navy used for San Diego Naval Air Station's aircraft carrierplane high-altitude bombing, dive-bombing and strafing. Near the Target Area was supported by the Naval Outlying Field, Ocotillo Dry Lake. The Target Area opened in 1941 and closed in 1955. In 1956 the land was sold and is now private property just south of California State Route 78.[7][8]
Borrego Hotel Naval Outlying Landing Field
About 3 miles south of the Borrego Valley Maneuver Area was the Borrego Hotel Naval Outlying Landing Field. Landing Field was used for emergency landing activities. The Landing Field had two dirt runways built on Halfhill Dry Lake. The site was used from 1941 to 1955. On 6 6 September 1956 the land was sold. There are no remains of the former field.33°05′N116°06′W / 33.09°N 116.1°W / 33.09; -116.1[9]
Benson Bombing Range
Benson Bombing Range also called the Benson/Ocotillo Dry Lake Range was used for bombing, dive-bombing and strafing training. The 353 acre Range was located on the Benson Dry Lake and Ocotillo Dry Lake near Ocotillo Wells, California.[10]