NATO Enhanced Forward Presence

Enhanced Forward Presence (EFP) is a NATO-allied forward-deployed defense and deterrence military force in Northern, Central and Eastern Europe. This posture in Northern Europe through Finland, Estonia, Latvia, and Lithuania and in Central Europe through Poland, Slovakia and Hungary and in Eastern Europe through Romania and Bulgaria, is in place to protect and reassure the security of NATO's Northern, Central and Eastern European member states on NATO's eastern flank.

Source: Wikipedia — NATO Enhanced Forward Presence (CC BY-SA 4.0)