This two volume report summarizes the activities of the DoD Shale Oil Task Force. The work commenced in December 1977 and was completed in June 1978. The research described in Volume I of the report explores the future availability of mobility fuels to DoD and addresses the options DoD has to ensure that its mobility fuel needs are satisfied. Volume I of the report contains: a review of pertinent petroleum production and consumption trends; projections of DoD's future requirements; and a recommendation that DoD must plan for an orderly transition from natural crude to synthetic fuels during the time period 1985-2010. The report also points out that shale-derived military mobility fuel is an attractive near-term alternative to natural crude oil. Volume I concludes by providing a skeletal framework of a Defense Mobility Fuels Action Plan which includes a suggested management structure and assignment of specific tasks. Volume II of the report contains appendices which provide backup material to the report.