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The motto reads “Readiness Since 1942,” and there are 66 years of history to back it up.
Sierra Army Depot was born with General Order No. 9 signed by General George C.
Marshall on February 2, 1942. Its first name was Sierra Ordnance Depot. “Sierra”
designated its location east of the Sierra Nevada Mountains, and “Ordnance” reflected
its original missions: first, the storage of general supplies and then in 1947, the
renovation and demilitarization of ammunition.
Since 1942, Sierra Army Depot has grown and its mission has changed as the Army and the world around it changed. Its list of milestones includes:
Since the 1995 Base Realignment and Closure decision (BRAC) to realign the Depot by reducing its conventional ammunition mission, the Depot has increased its emphasis on the receipt, storage, Care of Supplies in Storage (COSIS), repair, assembly, disassembly and shipment of major and secondary items as its primary mission. However, the Depot continues to store conventional ammunition for the Joint Munitions Command (JMC).