This paper aims to analyze the motivations and the soldiers who fought in the war in Iraq started in March 2003. The attacks of September 11, 2001 transformed the foreign policy of the United States, the years of relative peace conquered at the end of the cold war is over, Americans now had a new enemy, political Islam. Soon after the attacks, the Bush Administration (2001-2009) tried to relate Islamic fighters belonging to Al-Qaeda with the regime of Saddam Hussein, in a clear attempt to justify an invasion on Iraq internally. Externally, the American Government, along with the Briton, claimed that the Iraqis had weapons of mass destruction, which inflicted the UN resolutions imposed on the Iraqi Government during the years 1990. However, neither the inspections and subsequently the invasion were able to find such weapons. What if you saw after the invasion was the huge profit obtained by private military and oil companies. In the research was analyzed as if formed the Middle East, the Empire of the United States on a global scale, the report of the Chief Inspector of UNMOVIC, the UN agency responsible for weapons inspections in Iraq, and the letters of soldiers who fought in Iraq. In historiography, as in what if notes is that there were three present interests in the war in Iraq, economic order first, with the possibility of profit of the private military companies and the opportunity to extract oil; second related to foreign policy, which had the interest in rearranging geopolitics of the region; and third of domestic politics, to which there was an increase in the popularity of the Bush administration, with the war on Terror.