The ability to achieve a specified wartime objective (win a war or battle, destroy a
target set). It includes four major components: a). Force Structure -- Numbers, size and composition of the units that compromise our Defense forces; b) Modernization --Technical sophistication of forces, units, weapon systems, and equipment; c) Readiness-- The ability of forces, units, weapon systems, or equipment to deliver the outputs for which they were designed; d) Sustainability-- The ability to maintain the necessary level and duration of operational activity to achieve military objectives. Sustainability is a function of providing for and maintaining those levels of ready forces, materiel, and consumables necessary to support military effort.