Shoulder sleeve insignia (SSI) are distinctive cloth patches worn on the left sleeve of the United States Army uniform just below the shoulder seam by soldiers assigned to divisions, corps, armies, and other specifically authorized organizations. They are also worn on the right sleeve by soldiers to indicate former overseas service with certain units during periods of U.S. military operations in hostile conditions (MOHC).
332d Infantry Regiment and Army of Occupation shoulder sleeve insignia worn on a World War I era U.S. infantry officer's coat.
Example of the five current types of shoulder sleeve insignia for the U.S. 1st Cavalry Division; full color, BDU subdued, desert subdued, UCP subdued, OCP subdued
The U.S. Army Armored School insignia.
U.S. soldiers wearing the DCU uniform with the 25th Infantry Division SSI.
1st Infantry Division (United States)
The 1st Infantry Division (1ID) is a combined arms division of the United States Army, and is the oldest continuously serving division in the Regular Army. It has seen continuous service since its organization in 1917 during World War I. It was officially nicknamed "The Big Red One" after its shoulder patch and is also nicknamed "The Fighting First." The division has also received troop monikers of "The Big Dead One" and "The Bloody First" as puns on the respective officially sanctioned nicknames. It is currently based at Fort Riley, Kansas.
Red Cross nurses serving bread and coffee to doughboys of the 16th Infantry, 1st Division, upon their arrival in Paris, July 4, 1917.
General John J. Pershing, Commander'in-Chief of the AEF, and Major General Charles P. Summerall, commander of the 1st Division, inspecting doughboys of the 16th Infantry, 1st Brigade, 1st Division, in France, September 7, 1918.
First Division monument on the Meuse-Argonne Battlefield, France.
The 1st Infantry Division entering Trier, Germany, November 1918.