According to the Pentagon, more than 5,500 military personnel deserted in 2003–2004, following the Iraq invasion and occupation. The number had reached about 8,000 by the first quarter of 2006. Another source states that since 2000, about 40,000 troops from all branches of the military have deserted. More than half of these served in the U.S. Army. Almost all of these soldiers deserted within the United States. There has been only one reported case of a desertion in Iraq. The Army, Navy, and Air Force reported 7,978 desertions in 2001, compared with 3,456 in 2005. The Marine Corps showed 1,603 Marines in desertion status in 2001. That had declined to 148 by 2005.