Slovenia formally joined NATO in March 2004. The transition of its armed forces from a primarily conscript-based territorial defense organization to a professional force structure has the ultimate goal of creating NATO-interoperable combat units able to operate on an even par with units from other NATO armies. Implementation of interoperability objectives as determined by the Planning and Review Process (PARP) and the Individual Partnership Program (IPP) as part of Slovenia's PfP participation proceeds. Slovenia's elite units already train with and are integrated into international units including NATO members—for example as part of SFOR and on Cyprus. Its elite mountain troops will be assigned to the Multinational Land Force peacekeeping battalion with Italy, Hungary, and Croatia. Slovenia hosted its first PfP exercise in 1998--"Cooperative Adventure Exchange"—a multinational disaster-preparedness command post exercise involving almost 6,000 troops from 19 NATO and PfP member nations.