This fact sheet explains the difference between "enabling" forces and other U.S. support forces stationed in surrounding countries, referred to as "reception, staging, onward movement and integration (RSOI)" forces.
U.S. forces, as part of the NATO enabling force, will move into the theater of operations to prepare entry points for the main Implementation Force (IFOR). Enabling forces will move into Croatia, Bosnia and Slovenia and be under NATO operational control.
U.S. forces in the "enabling" category will number approximately 735 in Bosnia (out of a total of 1,400 NATO forces) and about 730 in Croatia (out of a total of 1,200 NATO forces), for a total of approximately 2,600 NATO enabling forces in the Former Yugoslavia.
Reception, staging, onward movement and integration (RSOI) forces will be U.S. forces and will remain under U.S. national command and control. A total of approximately 7,000 U.S. RSOI forces will support the IFOR from Italy, Hungary and Germany.
The missions for both forces are similar. Enabling force missions center on establishment of base structure, communications facilities, life support areas, equipment and supply storage areas. Military skills involved include transportation specialists, supply, communications, military police, administrative, medical and others required to introduce a large force into the operations area.
Both enabling and RSOI forces come primarily from Germany, using multiple entry points.