Arcane Thunder 26 is a Multi-Domain Command - Europe exercise with U.S. Army and
multinational partners in April 2026 in the European Theater and across the United States. This exercise will integrate joint forces, Allies, and partner capabilities to strengthen our ability to defend U.S. homeland and the protect our Allies.
More than 300 U.S. and Allied service members are participating in Exercise Arcane Thunder 25 (AT25), a U.S. Army Europe and Africa directed, 2nd Multi-Domain Task Force-led exercise designed to strengthen multi-domain integration and interoperability across the European and African theaters.