In Croatia, the Armed Forces of Croatia (OSRH) are responsible for the defense of Croatia’s sovereignty and territory, contributing to international humanitarian, peacekeeping, and security missions, and providing assistance to civil authorities for such missions as responding to disasters, search and rescue, anti-terrorism, and internal security in times of crisis if called upon by the prime minister or the president; Croatia joined NATO in 2009, and the OSRH participates in NATO missions, including its peacekeeping force in Kosovo and the Enhanced Forward Presence mission in Eastern Europe; it also contributes to EU and UN missions; the OSRH trains regularly with NATO and regional partners  

the OSRH was established in 1991 from the Croatian National Guard during the Croatian War of Independence (1991-95); during the war, the ground forces grew to as many as 60 brigades and dozens of independent battalions, and a single military offensive against Serbian forces in 1995 included some 100,000 Croatian troops; in 2000, Croatia initiated an effort to modernize and reform the OSRH into a small, professional military capable of meeting the challenges of NATO membership; the current 15,000-strong military’s principal combat forces are two mechanized infantry brigades, a small joint service special operations command, a flotilla of missile boats and coastal patrol vessels, and a squadron of Soviet-era fighter aircraft that are in the process of being replaced by more modern French aircraft  (2023)