2. Victory in the defense is a characteristic of the era of Great Demographic Fractionation. Strategic victories are reserved to the defensive. An offensive with success is only obtained in order to enforce the defense of the region. It is the defense and the counter-offense phase.� 3. The strongest strategic weakness is characteristic of the Great Depression.� 4. Disintegration is the phase where strategic offensives are useless to back up the continental or intercontinental empire.� The strategic potential is effective for the imperial body or nation, but it is always useless for the second empire of the cycle, that is, when the nation is about to enter the era of great demographic fractionation. 5. Conservation is the maintenance phase of the empire.� Any military operation in this phase should be closely studied and analyzed, including the human means factor. Victories and defeats alternate with each other. It is more a phase of the defensive in order to maintain conquered geographical regions.� 6. In the Relative Independence phase, the strategic potential is equal to that of a nation, depending on the country�s military, economic and strategic ability.� 7. Military disaster is an inexorable defeat, whether it is a campaign or a complete war.� 8. The territory of a nation maintains its military potentiality towards territorial defense and an offensive potentiality, according to its geographical position, in the corresponding social cycle and in the social phase of the cycle.� 9. There should be no friction between classical principles and mathematical-historical principles. These give results of the war or, in other cases, govern the total or High strategy. They are a strategic synthesis of the Law of History, that is, eternal Laws of the Art of war, that dominate the whole set. Accordingly, they are a determining factor in all strategic operations throughout the planet, not only in times of peace but also in times of war.� The author of Mathematics of History, Dr. Deulofeu, started on a different road than the one followed by other historians. The mathematics of history shows in an analysis of 5,100 years that humanity does not follow a road of ascending but oscillating progress that obeys mathematical precision.