Fast Facts Nearly 2 decades of conflict has degraded U.S. military readiness—the forces' ability to fight and meet the demands of their assigned missions. The National Defense Strategy states that DOD should be ready to operate in all warfighting domains—ground, sea, air, space, and cyber. DOD has a plan to recover readiness, which includes goals that align with the national strategy. From FY 2017 through FY 2019, U.S. military readiness increased in the ground domain and declined in the sea domain, while readiness ratings in the space, air, and cyber domains were mixed. Skip to Highlights What GAO Found