Operation OVERLORD provides an ideal case study for the joint military planner. An analysis
of Operation OVERLORD using the timeless principles of war provides insight that can still be useful
today when planning combined, joint, and coalition operations. With the onset of the global war on
terrorism, modern joint planners face complex challenges. These threats will have to be met by
fighting as a combined, joint, and coalition team. In this light, now is a good time to look back at the
planning and execution of the largest and most complex combined, joint, and multinational amphibious
operation in the history of warfare for some lessons learned and planning perspectives. Extremely
detailed planning and innovative preparation ultimately led to the liberation of France, the fall of
Germany, and Allied victory in Europe. The origins of Operation OVERLORD will be summarized
next, followed by an example of each principle of war as it pertained to the operation.
The Origins of Operation OVERLORD
In August 1942, an important event occurred that would influence planning for the