The Defense Department spent the $9.1 billion budget that Congress authorized for the operation and maintenance needs of overseas contingency operations to meet base requirements.
The Government Accountability Office said in a report issued Wednesday that DoD obligated funds to cover base programs and activities, including headquarters, maintenance and transportation costs.
Base requirements include operational support for installations; training and education; civilian personnel; maintenance; contracted services; and defense health services.
Congress appropriated $8.6 billion of the $9.1 billion budget as base funds instead of OCO funds, and $500 million was appropriated as OCO funds for base requirements.
The National Defense Authorization Act for Fiscal Year 2016 allocated $9.1 billion of OCO appropriations for O&M base requirements.
The bill also directed GAO to report how DoD obligated funds that Congress authorized for base requirements.