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 Staff Sgt. Magen M. Reeves
USNHO hosts large mass casualty exercise
AFN Okinawa
May 13, 2025 | 1:00
U.S. Navy Lt. Cmdr. Rich Greenfield, director of expeditionary medicine at U.S. Naval Hospital Okinawa, talks about a large-scale mass casualty exercise on Camp Foster, Okinawa, Japan, May 8, 2025. Volunteers gathered for moulage to play as simulated patients to challenge hospital and emergency response staff from military agencies across Okinawa to prepare for real-world scenarios. (U.S. Air Force video by Staff Sgt. Magen M. Reeves)
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enlightenedTo find information about filing a claim related to exercise DEFENDER activities, visit Claims Information and select your country.