A shoulder sleeve insignia (SSI) is an embroidered emblem worn on the sleeves of some United States Army uniforms to identify the primary headquarters to which a soldier is assigned. Like division sized units, separate brigades of the U.S. Army are allowed their own SSI to distinguish their wearers from those of other units. Most military units smaller than brigades do not have SSI, but rather wear the SSI of a higher headquarters. The following list of SSIs represent some of the current and former brigades of the U.S. Army:
Air defense artillery Brigades
Armored Brigades
Aviation Brigades
Battlefield surveillance Brigades
Cavalry Brigades
Chemical Brigades
Civil affairs Brigades
Engineer Brigades
Field artillery/fires Brigades
Infantry Brigades
Maneuver enhancement Brigades
Medical Brigades
Military intelligence Brigades
Military police Brigades
Ordnance Brigades
Quartermaster Brigades
Space and missile defense Brigades
Signal Brigades
Support Brigades
Sustainment Brigades
Transportation Brigades
See also Field army insignia of the United States Army Corps insignia of the United States Army Division insignia of the United States Army Miscellaneous shoulder sleeve insignia of the United States Army Obsolete shoulder sleeve insignia of the United States Army Miscellaneous United States Army coats of arms
References
The US Army Institute of Heraldry GlobalSecurity.org