100th Division Patch
2 1/2' vertical military spec color shoulder patch. The 100th Division was a formation of the United States Army. Throughout its long history, the division has been known by various names. In World War I and World War II, the division was constituted the 100th Infantry Division. From 1946 to 1952, the division was a part of the United States Army Reserve as the 100th Airborne Division. In 1952, the division was once more redesignated the 100th Infantry Division, but was changed again only three years later, in 1955, as 100th Division (Replacement Training). In 1959, it was once more reorganized and redesignated, this time to its current designation as 100th Division (Institutional Training). Today the division is headquartered at Fort Knox, Kentucky, with eight reservist brigades—including an ROTC brigade—spread across four states—Kentucky, Tennessee, Mississippi, and Alabama.