Greening of Global Security: The U.S. Military and International Environmental Security [open pdf - 3MB]
From the thesis abstract: "This thesis examines the roles and missions of the U.S. military, and compares them to potential international environmental conflicts. Five specific environmental issues are examined in detail: deforestation, fresh water, nuclear contamination, overpopulation, and ecological terrorism. Ten U.S. military roles are also examined in detail: communications, interdiction, enforcement, education and training, assistance, leadership, warfighting, surveillance, intelligence, and deterrence. Analysis reveals that the U.S. military can play a support role in the majority of the environmental conflict issues. Use of force roles apply to fewer of the environmental issues. The U.S. military's primary use of force role of warfighting applies only to one environmental issue."
Defense Technical Information Center: http://dsearch.dtic.mil/