This bill establishes clear rules and protections for when the Secretary of Defense removes military officers from promotion consideration after they have been selected by a promotion board. Currently, the Secretary can remove selected officers with limited oversight, and this legislation aims to change that by requiring the Secretary to document specific grounds for removal such as misconduct, newly discovered adverse information, failure to meet statutory requirements, or national security concerns. The bill also prohibits removal based on an officer's participation in lawful Department of Defense policies or activities, and prevents the Secretary from using removal to punish officers for implementing official directives. Officers facing removal would receive written notice, a chance to respond to the allegations, and access to an expedited review process through military records correction boards, which must complete their review within 180 days. The Secretary of Defense must notify Congress within 15 days of making any final removal decision. The bill's supporters argue these protections preserve the merit-based and apolitical nature of military promotions, while the legislation itself requires the Defense Department to issue implementing regulations within 180 days of enactment.