Peacock Military Academy, in San Antonio, also known as Peacock School for Boys, Peacock Military School, and Peacock Military College, was established in 1894 by Wesley Peacock. The institution was one of the first private preparatory boarding and day schools in Texas for boys between twelve and eighteen years of age. In 1900 two blocks of land adjoining the school were purchased, and a 2½-story building for dormitories and classrooms was erected. The school was chartered by the state of Texas in 1904 and was recognized by the United States government as a military institute, junior ROTC unit. It was designated an honor school in 1908 by the Department of the Army. From 1920 to 1926 the United States Veterans Bureau leased the school plant, where 5,000 former servicemen were rehabilitated and given vocational training under government supervision. In 1933 the school was rechartered as a nonprofit educational corporation, a change that had been a longtime ambition of the founder. During World War II a training and research unit of the Texas State Guard was maintained at the facility. The school was fully accredited by the Texas Education Agency and the Southern Association of Colleges and Schools and was a member of the Southern Association of Independent Schools, the National Association of Military Schools, and the Texas Preparatory League.
Peacock Academy grew from nine boarding students and seventeen day students until enrollment had to be limited to 200 students. Weekly dress parades were held by the battalion of cadets on Sunday afternoons during the spring semester; high ranking officers from the local military bases were guests as reviewing officers. After the parade ceremonies, several distinctive drill teams-the Zouaves, the McKinnon Rifles, and the mounted "Monkey" Drill Team-performed. Wesley Peacock, Sr., was president until 1926, when he gave active management to his sons. Col. Wesley Peacock, Jr., became superintendent, and Col. Donald W. Peacock became commandant of cadets. The academy ceased operation in June 1973, and the entire school plant, over fifteen acres and fifteen buildings with their furnishings, was conveyed to the Salvation Army.