In Kosovo, the Kosovo Security Force (KSF) was established in 2009 as a small (1,500 personnel), lightly armed disaster response force; the NATO-led Kosovo Force (KFOR) was charged with assisting in the development of the KSF and bringing it up to standards designated by NATO; the KSF was certified as fully operational by the North Atlantic Council in 2013, indicating the then 2,200-strong KSF was entirely capable of performing the tasks assigned under its mandate, which included non-military security functions that were not appropriate for the police, plus missions such as search and rescue, explosive ordnance disposal, control and clearance of hazardous materials, firefighting, and other humanitarian assistance tasks

in 2019, Kosovo approved legislation that began a process to transition the KSF by 2028 into a professional military (the Kosovo Armed Forces) led by a General Staff and comprised of a Land Force, a National Guard, a Logistics Command, and a Doctrine and Training Command; it would have a strength of up to 5,000 with about 3,000 reserves; at the same time, the KSF’s mission was expanded to include traditional military functions, such as territorial defense and international peacekeeping; the KSF’s first international mission was the deployment of a small force to Kuwait in 2021 

the NATO-led KFOR has operated in the country as a peace support force since 1999; in addition to assisting in the development of the KSF, KFOR is responsible for providing a safe and secure environment and ensuring freedom of movement for all citizens; as of 2025, it had approximately 4,700 troops from more than 30 countries (2025)