I have always loved the "Task" given Eisenhower upon taking command of the European Theater of Operations in February of 1944. Rather a host of not mentioned and yet to be determined associated "tasks" not detailed. And exactly the way to run such a vast operation. Delegate to the best man available.
DIRECTIVE TO SUPREME COMMANDER,
ALLIED EXPEDITIONARY FORCE
You are hereby designated as Supreme Allied Commander of the forces placed under your orders for operations for liberation of Europe from Germans. Your title will be Supreme Commander Allied Expeditionary Force.
Task. You will enter the continent of Europe and, in conjunction with the other United Nations, undertake operations aimed at the heart of Germany and the destruction of her armed forces. The date for entering the Continent is the month of May, 1944. After adequate channel ports have been secured, exploitation will be directed towards securing an area that will facilitate both ground and air operations against the enemy.