COSTA MESA, Calif. - Russia’s continued aggression against Ukraine and its provocations along NATO’s eastern flank have reshaped Europe’s security environment. In September, the threat became more tangible: more than twenty Russian drones violated Polish airspace, prompting Warsaw to invoke Article 4 of the North Atlantic Treaty, which calls urgent consultations among Allies when any member perceives its security or territorial integrity is at risk. Just days later, Russian MiG-31 fighter jets entered Estonian airspace without flight plans or transponders, forcing NATO aircraft to scramble in response. These deliberate incursions underscored a new phase of Russian coercion-one defined by constant pressure, swarm tactics, and speed-and made clear why NATO’s eastern defenses must be faster, smarter and more connected than ever.
To meet that challenge, the U.S. Army Europe and Africa, working closely with NATO Allies, is developing the Eastern Flank Deterrence Line (EFDL), which includes a distributed mission command architecture designed to integrate national and Allied sensors, shooters, and unmanned systems into a shared live-data network.
Rather than a fixed formation or location, the EFDL functions as a digital shield stretching across NATO’s eastern border. A radar in Estonia, for example, could detect incoming aircraft and instantly share that data with air-defense batteries in Latvia or command centers in Poland. Each nation remains responsible for defending its own territory, but through the EFDL, their systems contribute to a collective deterrence posture.
In early November, Anduril joined the U.S. Army’s 10th Army Air and Missile Defense Command (AAMDC) and the Estonian Defense Forces in Tallinn, Estonia, for exercise Digital Shield 1.0, one of the first major event to put the EFDL concept into practice. Over five days, Anduril engineers worked alongside U.S. and Estonian units to connect previously separate sensors, radars, and command and control systems into a single distributed network-the kind of digital infrastructure the EFDL will rely on across Europe.