The 38th Infantry Division SSI (Specific Support Instruction) is a tactical formation of the United States Army, specifically identified as the 38th Infantry Division. This division is one of the oldest in the U.S. Army's active component, with its lineage tracing back to the World War I era. The SSI designation indicates that this unit provides specific, specialized support to other formations within the military structure. Its role and operations are subject to the command of higher-level military authorities as required by various military scenarios. The division has a rich history, having participated in significant battles throughout its existence, including World War I, World War II, and more recent conflicts in Korea and Iraq.