The Citadel traces its origins to an arsenal constructed by the state of South Carolina to defend white Charlestonians against possible uprisings of enslaved people following the thwarted Denmark Vesey rebellion of 1822.
The act specified: That the students when admitted, shall be formed into a military corps, and shall constitute the public guard of the Arsenal at Columbia, and of the Citadel and Magazine in and near Charleston ... to guard effectually, the public arms and other property at the places aforsaid ...[8] The first 20 cadets reported to the Citadel Academy at Marion Square in downtown Charleston on March 20, 1843, a date now celebrated as "Corps Day".
[11]: 10 When South Carolina declared that it had seceded from the Union in December 1860, Major Robert Anderson moved his garrison of U.S. troops to Fort Sumter and requested reinforcements from the federal government.
On January 9, 1861, a battery on Morris Island manned by Citadel Academy cadets fired on the U.S. steamer Star of the West, preventing it from reaching Fort Sumter with troops and supplies.
As a result of these actions, the state of South Carolina authorized the flag of the South Carolina Corps of Cadets to carry the following Confederate battle streamers:[14][15][16]: 11 (The Confederate States Army streamer is gray embroidered in silver and the remainder embroidered in blue)[15] In early December, 1864 Governor Milledge Luke Bonham ordered the Battalion of State Cadets to Tulifinny Creek near Yemassee, South Carolina to join a small Confederate force defending the Charleston and Savannah Railroad.
Following the war, the Board of Visitors eventually regained possession of The Citadel campus and with the urging of Governor Johnson Hagood, Class of 1847, the South Carolina Legislature passed an act to reopen the college.
[18] In World War I, Citadel graduates were among the first contingents of American troops to fight with the Australian, and later British and French divisions; several served prominently with the Marine Corps at the Battle of Belleau Wood.
The college moved to its current location in 1922; the new campus initially consisted of only a barracks, admin/classroom building, mess hall, gym and hospital but in the next 3 decades grew rapidly.
By 1943 so many cadets had left school to join the military that enrollment had dropped to less than 500 but was soon bolstered with the addition of active duty service members attending as part of the Army Specialized Training Program.
In the immediate postwar period veteran students utilizing the GI Bill swelled the size of the school to record levels and at one time outnumbered cadets more than 2 to 1.
The Holliday Alumni Center located on Hagood Avenue just south of campus was dedicated in 2001, Johnson Hagood Stadium has had major improvements in recent years including a new field house and reconstruction of the home stands including a new press box tower that features club level seating and luxury boxes.
In recent years new majors in high demand fields such as Computer Science, Criminal Justice, Sports Management, Nursing and Mechanical Engineering have been established; minors are now offered in diverse subjects including Cybersecurity, East Asian Studies, International Relations, Management Information Systems and African American Studies.
[26][27] A Supreme Court ruling in a discrimination lawsuit against Virginia Military Institute eventually compelled the school to officially change its admission policy to admit women.
[33] Burns, a native of Pendleton, South Carolina, was recognised for her remarkable academic achievement by the Anderson County Council in a resolution passed in June 2012.
[34] On March 21, 2018, The Citadel announced that Sara J. Zorn would serve as Regimental Commander, the highest ranking cadet for the 2018–19 academic year.