NATO fact sheet on STEADFAST DEFENDER 24 (STDE24), the principal NATO multi-domain exercise for 2024. STDE24 is part of a series of national and multinational large-scale live exercises (LIVEX) conducted across various geographical locations within SACEUR’s area of responsibility. It is the largest NATO exercise in decades, with approximately 90,000 soldiers, sailors and airmen from 31 Allies and Sweden, and it will be based on NATO’s new defence plans.