Camp at Eagle Pass was established on 3 April 1886 as a sub-post of Fort Clark until it was discontinued in February 1927. The 3rd Texas Volunteer Infantry was based here from 25 May 1898 until 16 February 1899. The camp was ordered abandoned in 1904 but a detachment of Signal Corps was placed here on 9 February 1911 while "Mexico was aflame with revolution" until 1914. The National Guard was mobilized here in 1916, joining the Coast Artillery Corps, while the 90th Aero Squadron operated DH-4Bs from here in 1919 until 1920, which included Jimmy Doolittle. Only a caretaker force remained to watch over the hospital from 1922 until final closure of the camp in 1927.