The U.S. Army Medical Department Center and School Shoulder Sleeve Insignia, more commonly referred to as a unit patch, was originally approved for the U.S. Army Medical Training Center on 11 February 1959 but was cancelled on 20 July 1973. On 5 January 1993, the insignia was reinstated, given revised symbolism and an amended description, and redesignated for wear by personnel in the U.S. Army Medical Department Center and School.
Maroon and white, official colors for the United States Army Medical Department, are used exclusively for this insignia. In the center of the diamond-shaped insignia is a serpent entwined around a flaming torch, mimicking the Staff/Rod of Asclepius, which is a longtime symbol associated with medical care. (The Institute of Heraldry says this is adapted from the Army Medical Service insignia, but Army Medical units use a caduceus for branch insignia, not the Asclepius staff.)
In 2015, the Army Medical Department Center and School (AMEDDC&S) was reorganized and redesignated as the U.S. Army Health Readiness Center of Excellence, and in September 2019 it was given its current designation of U.S. Army Medical Center of Excellence. The U.S Army Medical Center of Excellence is located at Fort Sam Houston, Texas.