These trends affect leaders in ways they barely know. The tendency is to give more power to the group: wanting to seem democratic, leaders poll the whole staff for opinions, let the group make decisions, give subordinates input into the crafting of an overall strategy. Without realizing it, these leaders are letting the politics of the day seduce them into violating one of the most important rules of warfare and leadership: unity of command. Before it is too late, learn the lessons of war: divided leadership is a recipe for disaster, the cause of the greatest military defeats in history.