As part of a larger study on the effects of energy shortage on national defense, examines indirect military energy consumption--energy used by the manufacturing and transportation sectors of the economy in support of Department of Defense activities for 1965 and 1967-1970. The methodology is based on input/output analysis, using a DOD spending vector based on procurement data, and an energy matrix based on the 82-sector U.S. Input/Output Table and 1963 flow data. The elements of the energy matrix are expressed in Btu per dollar of final demand. The largest energy users were (1) transportation, (2) aircraft and parts, (3) petroleum refining and products, (4) ordnance, and (5) electrical equipment and supplies. Total energy intensity (Btu consumed divided by DOD spending) was 0.0572 Btu/$, higher than for the United States as a whole (0.0482 Btu/$), but lower for manufacturing alone. Total consumed is estimated at 1870 to 2323 trillion Btu, about the same as the 2000 trillion Btu used by the DOD directly. 69 pp. Ref.