From the CRS Report:
State Department and USAID disbursements represent only about 30% of total U.S. foreign assistance in 2007 and 64% of economic (non-military) aid.
The increasing portion of assistance disbursed by U.S. military entities since FY2002 can be largely attributed to dramatic increases in military and reconstruction assistance associated with the wars in Iraq and Afghanistan, and appears to be on the decline. The impact of these wars on foreign assistance levels is demonstrated by Figure 2, which compares the same FY2001 agency disbursement chart in Figure 1 with a chart showing FY2007 disbursements without aid to Iraq and Afghanistan. Excluding funding to these two countries more than doubles the share of aid disbursed by State, from 11% to 25%, and gives DOD the third largest share, after USAID and State. Furthermore, it is important to note that much of the funding disbursed by DOD is military assistance, for which State plays a key role in allocation.
CRS: Foreign Aid Reform: Agency Coordination | August 7, 2009