DEFENDER is the Army’s largest annual opportunity to exercise moving personnel and equipment into theater across modes for initial and follow-on operations critical to Large Scale Combat Operations. Led by U.S. Army Europe and Africa, the exercise focuses on the strategic deployment of CONUS-based forces, employment of Army Prepositioned Stock and follow-on exercises demonstrating lethality and interoperability with Allies and partners

DEFENDER 25 Outreach tour
DEFENDER 25 Infographic

Videos
Video by Spc. Jennifer Posy
Petty Officer 2nd Class Jonathan Mesa Arcane Thunder 25 Interview
5th Mobile Public Affairs Detachment
May 10, 2025 | 4:01
U.S. Navy Petty Officer 2nd Class Jonathan Mesa speaks on Exercise Arcane Thunder 25 and the capabilities of the Unmanned Surface Vehicles (USV) belonging to the Navy's Task Force 66, May 9, 2025, at Port Wojenny Gdynia, Poland. Exercise Arcane Thunder 25 is a collaborative U.S. Army Europe directed, 2nd Multi-Domain Task Force led exercise designed to leverage the robust war-fighting capabilities of the U.S., Allies, and partner nations to reach a precise, lethal end point. (U.S. Army video by Spc. Jennifer Posy)
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  • Immediate Response

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  • Saber Guardian

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Press Information

enlightenedTo find information about filing a claim related to exercise DEFENDER activities, visit Claims Information and select your country.