The US government has given the Afghan National Army (ANA) more than $1 billion worth of ammunition, according to the Special Inspector General for Afghanistan Reconstruction's (SIGAR) latest oversight report.
This is in addition to $288 million that has been spent on ammunition for the Afghan National Police (ANP), which has been cited by SIGAR for its widespread corruption.
The US has spent more than $54 billion in total to arm, train, and sustain Afghanistan's security forces, which continue to underperform and suffer low enlistment rates, according to SIGAR's quarterly progress reports.
It is unclear how much ammunition the $1.03 billion translates to and just how much of this ammo has been used.
In addition to the billion-dollar ammo purchase, the United States has spent more than $878 million on weapons for the ANA and another $5.6 billion on military vehicles.
However, a large amount of this money has been wasted on vehicles that either does not work or that have been destroyed beyond repair, according to SIGAR.
There are around 66,000 US troops in Afghanistan helping over 300,000 Afghan security forces fight insurgency.
The US troops will leave Afghanistan by the end of 2014, after which the Afghan security forces to take charge of full security responsibility.