As one of the largest Federal landholders in the Chesapeake Bay watershed, the Department of Defense's efforts towards the Chesapeake’s restoration and protection have exemplified the positive effects of interagency cooperation. This report provides a synthesis of the role the Department of Defense (DoD) has played in the Bay restoration effort. It outlines the specific commitments the DoD has made with the U.S. Environmental Protection Agency and other Chesapeake Bay Program partners and identifies other DoD initiatives that support the Chesapeake Bay Program's efforts. This all-encompassing document will showcase DoDs efforts from 1998-2004.