Ordnance School
The United States Army Ordnance Corps is a Sustainment (formerly combat service support)
branch of the United States Army, headquartered at Fort Lee, Virginia. In the United States
Army, the term combat service support was until 2008, defined as the essential capabilities,
functions, activities, and tasks necessary to sustain all elements of operating forces in
theater at all levels of war. Within the national and theater logistic systems, it includes
but is not limited to that support rendered by service forces in ensuring the aspects of
supply, maintenance, transportation, health services, and other services required by
aviation and ground combat troops to permit those units to accomplish their missions in
combat. Combat Service Support encompasses those activities at all levels of war that
produce sustainment to all operating forces on the battlefield.
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