The 188th Infantry Brigade is an infantry training brigade of the United States Army based at Fort Stewart, Georgia. It is a subordinate unit of the First United States Army, Division East.

First Army Division East is a division of the First United States Army. With its new role, the First Army developed two subordinate multi-component headquarters – one division to support the eastern United States and the other to support the western United States. First Army Division West was activated at Fort Carson, Colorado, and later moved to Fort Hood, Texas. First Army Division East was activated on 7 March 2007 at Fort George G. Meade, Maryland, and later moved to Fort Knox, Kentucky.