Description
On a blue norman shield 2 5/8 inches (6.67 cm) in height and 2 1/8 inches (5.40 cm) in width, four white stars of varying sizes all slightly tipped to the dexter, arranged to represent the Southern Cross.

Symbolism
The four white stars on the blue field are symbolic of the Southern Cross under which the organization has served.

Background
The shoulder sleeve insignia was originally approved for the Americal Division on 20 December 1943. It was redesignated for the 23d Infantry Division on 4 November 1954. (TIOH Dwg. No. A-1-467)