The U.S. military is the armed forces of the United States, playing a crucial role in national defense and international operations. It consists of six branches: the Army, Navy, Air Force, Marine Corps, Coast Guard, and Space Force. The U.S. military is the third-largest active military in the world. As of March 2025, it comprised approximately 2.07 million military personnel and 788,470 civilians. The Army is the most senior branch and the primary offensive force.
In recent years, the U.S. military has been actively integrating artificial intelligence (AI) into its operations. AI is being used to enhance capabilities across various branches, from intelligence gathering and threat neutralization to improving decision-making and streamlining logistics. For example, the Army awarded a $98.9 million deal to TurbineOne to help soldiers process battlefield data on-device using AI, even without reliable cloud connections. Despite these advancements, the Department of Defense requires human oversight in the use of force, ensuring that commanders and operators exercise appropriate judgment. However, the Pentagon's push to utilize AI tools for all lawful purposes has faced resistance, as seen in the dispute with Anthropic over the use of its Claude AI model.