The Joint Munitions Command (JMC) is the latest in a series of commands since World War II that have managed the ammunition plants of the United States. Since 1973, those commands have been headquartered on Rock Island Arsenal. Brigadier General Gavin J. Gardner commands the JMC. The headquarters on Rock Island Arsenal is responsible for munitions production and storage (depots) facilities in 16 states. JMC employs 20 military, over 5800 civilians and 8300 contractor personnel. Of these approximately 14,000 personnel, more than 650 work in the headquarters on Rock Island Arsenal. JMC has an annual budget of 1.2 billion dollars.

The Rock Island Arsenal comprises 946 acres and is located on Arsenal Island, originally known as Rock Island, on the Mississippi River between the cities of Davenport, Iowa, and Rock Island, Illinois. It is home to the United States Army First Army Headquarters, and the United States Army Center of Excellence for Additive Manufacturing.