Originally organized as the 31st Medical Regiment, the group fought in World War II Europe, and then spent much of the next fifty years providing support to the Seventh Army, primarily to the VII Corps.

A Silver color metal and enamel device 1 1/32 inches (2.62 cm) in height overall consisting of a shield blazoned: Sanguine, a bend Argent.

Attached below the shield a Maroon scroll inscribed OURS TO SAVE in Silver letters[3] The shield is maroon with the bend white in the colors of the Medical Department[3] The distinctive unit insignia was originally approved for the 31st Medical Regiment on 4 March 1941.

[1] Initial elements of the 31st Medical Group began flowing onto Utah Beach on D+2, 8 June 1944, and the group headquarters detachment landed on D+12, 18 June 1944, where it provided command and control for medical units of the First Army in support of the V Corps, as in World War II, echelon III/role III health service support was provided by the field army, and corps serves as tactical headquarters only.

There, it served alongside the 1st, 30th, and 64th Medical Groups in providing Echelon III support to the soldiers of the Ninth Army.