This chapter examines the “nuts and bolts” of war, including the formidable problems of movement and supply, transportation and administration. Logistics represent a vital element of warfare, indispensable to the operations of armies ever since the emergence of organized warfare. Broadly defined, this concept involves moving, supplying, and maintaining military forces, as well as transportation of material, food and animals, communications, personnel replacement, quarters, depots, and rear administration. The Napoleonic Wars witnessed important developments in the logistics and one of its lasting effects was creation and successful dissemination of bureaucratic reforms that improved state’s ability to mobilize forces and extract resources