Military Health System Review Defense Secretary Chuck Hagel directed the Defense Department to conduct a comprehensive review of the Military Health System focused on access to care. The review assessed the safety and quality of health care in military treatment facilities and the health care DOD purchases from civilian providers. The MHS provides health care for more than 9.6 million beneficiaries. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 694251-J-VDV46-959.jpg Photo Gallery