This article tells about Imperial Japanese attack on Pearl Harbor – sudden aerial strike which was intended to gain initial superiority over the United States. Article covers historical background and aftermath behind this war – why did Japanese were forced to start it and how the most effective carrier force managed to execute a daring plan. Although this topic may seem related to history it almost not. Strike on Pearl Harbor and other historical events can be disassembled by engineers to see level of entropy that is present in any event, including such a lucky event that is described in this article. People call it “luck”, in other words by analyzing historical events we can draw out of them how different events “work together” forming a completely unique situations – map events. Map event allows to analyze how different objects act in this system. Easily speaking, studying entropy though historical events we can better understand it and reduce the level of entropy. By reducing the level of entropy we can gain more control over events that happen around us. This article is devoted to analyze how Japanese managed to reduce the level of entropy around to a degree where they had n chance to conduct a surprise attack against the most powerful country in the world.