On a maroon diamond shaped embroidered device edged with a 1/8 inch (.32 cm) white border, displaying the head of a Jaguar caboshed snarling marked Proper, below the inscription "APPOQUINIMINK HS" in white letters. The overall dimensions are 3 5/16 inches (8.41 cm) in width and 2 13/16 inches (7.14 cm) in height.
Maroon, black, and white are the school colors. Maroon signifies valiance, black represents determination, and white is symbolic of discretion and maturity. The insignia is shaped like a gem style diamond to reflect that Delaware is nicknamed "the Diamond State". The Jaguar is the school's mascot which defends and protects his domain with absolute power and determined resolve, which reflects the strength and spirit displayed by the cadet's in all endeavors.
The shoulder sleeve insignia was authorized 1 April 2011. (TIOH Drawing Number A-10J-950)