
The United States Army Reserve (USAR) is a reserve force of the United States Army. Together, the Army Reserve and the Army National Guard constitute the Army element of the reserve components of the United States Armed Forces.

The 96th Military Police Battalion is a policing unit of the United States Army Reserve and currently subordinated to the 11th Military Police Brigade based in Los Alamitos, California.

Battle Assembly is the term used by the United States Army Reserve to describe monthly training, where soldiers practice and perfect their military skills and maintain individual and unit readiness in the event of mobilization and deployment. These training activities were formerly referred to simply as "drill" or "weekend drill", but according to former Chief of the Army Reserve, Lieutenant General James R. Helmly, the term was changed in 2005 to emphasize the need for Army Reserve soldiers' training to focus on continued preparation for fighting the Global War on Terrorism.

The Chief of the United States Army Reserve (CAR) is the commanding general of the United States Army Reserve.

United States Army Reserve Command (USARC) commands all United States Army Reserve units and is responsible for overseeing unit staffing, training, management and deployment. Approximately 205,000 Army Reserve soldiers are assigned to USARC. The major subordinate commands which report directly to USARC consist of operational commands, functional commands, support commands, and training commands. In turn, USARC itself reports to United States Army Forces Command (FORSCOM), where both are garrisoned in the same location at Fort Bragg, North Carolina.

The Individual Ready Reserve (IRR) is a category of the Ready Reserve of the Reserve Component of the Armed Forces of the United States composed of former active duty or reserve military personnel. Its governing statute is codified at 10 U.S.C. § 10144. For soldiers in the National Guard of the United States, its counterpart is the Inactive National Guard (ING). As of 22 June 2004, the IRR had approximately 112,000 members composed of enlisted personnel and officers, with more than 200 Military Occupational Specialties are represented, including combat arms, combat support, and combat service support.

The Office of the Chief of Army Reserve (OCAR) is located at Fort Belvoir, Virginia, and provides the Chief of Army Reserve (CAR) with a staff of functional advisors who develop and execute Army Reserve plans, policies and programs, plus administer Army Reserve personnel, operations and funding. The CAR is responsible for plans, policies and programs affecting all Army Reserve Soldiers, including those who report directly to the Army. OCAR is made up of specialized groups that advise and support the CAR on a wide variety of issues.