Yes. However, when I searched, I found this: In 2015 Serbia implemented its first Individual Partnership Action Plan with NATO, regularly participates in its military maneuvers and hosted a joint civil protection exercise with NATO in 2018 (https://en.wikipedia.org/wiki/Foreign_relations_of_NATO#:~:text=In%202015%20Serbia%20implemented%20its,exercise%20with%20NATO%20in%202018.).
Yes. However, when I searched, I found this: In 2015 Serbia implemented its first Individual Partnership Action Plan with NATO, regularly participates in its military maneuvers and hosted a joint civil protection exercise with NATO in 2018 (https://en.wikipedia.org/wiki/Foreign_relations_of_NATO#:~:text=In%202015%20Serbia%20implemented%20its,exercise%20with%20NATO%20in%202018.).