This bill, known as the "Defense Civilian Faculty Copyright Act of 2025," aims to amend Title 17 of the United States Code, which governs copyright law. Its central purpose is to enable the Federal Government royalty-free use of literary works created by civilian faculty members of the Uniformed Services University of Health Sciences (USUHS) during the course of their official employment. The legislation accomplishes this by modifying Section 105(d)(2) of Title 17, inserting the Uniformed Services University of Health Sciences into a list of entities whose civilian employees' works are subject to this royalty-free government use. This ensures that the government can utilize educational and research materials produced by these faculty members without additional cost. Conforming amendments are also included to update related subsections and maintain consistency within the copyright statute.