DoD policy calls for a strategic approach to the challenges posed by global climate change and climate variability. The February 2010 Quadrennial Defense Review recognized that climate change will affect the Department in two broad ways. First, climate change will shape the operating environment, roles, and missions that DoD undertakes. Second, DoD will need to adjust to the impacts of climate change on its facilities and military capabilities. To assist the Department in responding to these challenges, start a dialogue, and help frame a path forward, several organizational elements of DoD’s research and development (R&D) community convened a workshop in July 2011 involving both DoD researchers and policy makers, as well as other key elements of the federal climate change research and climate services community. The focus of this workshop was to establish a DoD network of funding entities and research centers and laboratories involved in climate change-related research and demonstration and to identify the role that DoD’s R&D community could serve to (1) assist DoD policy makers by providing the technical foundation for advancing new policies related to climate change and (2) provide DoD resource, infrastructure, and operational managers the science information, models, and tools needed to implement the effects of policy “on the ground.”  The workshop emphasized that climate change, including changes in climate variability, should be viewed in the broader context of global change phenomena that affect the ability of DoD to accomplish and sustain its missions into the future. Workshop Report