Islamabad ? The United States has long suspected that much of the billions of dollars it has sent Pakistan to battle militants has been diverted to the domestic economy and other causes, such as fighting India.

Now the scope and longevity of the misuse is becoming clear: Between 2002 and 2008, while al-Qaida regrouped, only $500 million of the $6.6 billion in American aid actually made it to the Pakistani military, two army generals tell The Associated Press.

The account of the generals, who asked to remain anonymous because military rules forbid them from speaking publicly, was backed up by other retired and active generals, former bureaucrats and government ministers.

At the time of the siphoning, Pervez Musharraf, a Washington ally, served as both chief of staff and president, making it easier to divert money intended for the military to bolster his sagging image at home through economic subsidies.

The details on misuse of American aid come as Washington again promises Pakistan money. Legislation to triple general aid to Pakistan cleared Congress last week. The U.S. is also insisting on more accountability for reimbursing money spent.