The 304th Sustainment Brigade is a sustainment brigade of the United States Army Reserve. It is headquartered at March Air Reserve Base near Riverside, California. Originally the 304th Corps Materiel Management Center, the unit became the 304th Support Center and received a distinctive unit insignia in August 2005. It then was transformed into a Sustainment Brigade in February 2006, and received its shoulder sleeve insignia in March 2006.