A shield with a tab attached above, all edged with a 1/8 inch (.32 cm) yellow border, 3 1/2 inches (8.89 cm) in height by 2 1/2 inches (6.35 cm) in width consisting of a blue upper portion bearing a white spear on a diagonal from lower left to upper right and pendant with two white feathers below the inscription on a diagonal "SOUTH" and "DOYLE" in white letters; all above a middle red band charged with four yellow stars on the horizontal. The lower portion has three white and two red alternating horizontal bands.
Red, blue and gold (yellow) are the school colors. The spear is the symbol of the school and reflects its physical approximation to the Cherokee Reservation. The stars represent the four classes of the school from which the cadet corps is comprised. The red and white band, in association with the blue, alludes to the national flag, symbolizing the cadet's dedication and service to community, state, and nation.
The shoulder sleeve insignia was authorized 7 February 1995. (TIOH Drawing Number A-10J-380)