Shoulder sleeve insignia (SSI) are cloth emblems worn on the shoulders of US Army uniforms to identify the primary headquarters to which a soldier is assigned.
Airborne Corps
Armored Corps
Army Corps
See also Field army insignia of the United States Army Division insignia of the United States Army Brigade insignia of the United States Army Miscellaneous shoulder sleeve insignia of the United States Army Obsolete shoulder sleeve insignia of the United States Army American Civil War corps badges
References
External links World War I Insignia