The hospital was formed upon the formation of the Territorial Army Volunteer Reserve (TAVR) in 1967, as the 204 (North Irish) General Hospital.

[2] Throughout the Cold War, the hospital was under the command of 107th (Ulster) Brigade; and on transfer to war, would re-subordinate to Commander Medical 1 (BR) Corps, and provide 800 beds.

[3] During the reforms implemented after the Cold War, the hospital was re-designated as 204 (North Irish) Field Hospital.

[2] As a result of Army 2020, the unit fell under 2nd Medical Brigade, and was paired with 34 Field Hospital.

[4] Under the Future Soldier programme, the hospital amalgamated with 253rd (North Irish) Medical Regiment to form the new 210 (North Irish) Multi-Role Medical Regiment in September 2023.