The United States Army Arsenal refers to facilities where military equipment, weapons, and ammunition are produced, stored, and maintained. These arsenals play a crucial role in supporting the operational readiness of the United States Army by ensuring that troops have access to the necessary resources for training and combat. Historically, the U.S. has established several arsenals across the country, such as the Rock Island Arsenal and the Picatinny Arsenal. These locations not only manufacture military supplies but also conduct research and development to improve existing technologies and create new defense systems.