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
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Video by Cpl. Aaron TorresLemus
Marines With CLB-23 Execute Mountain Training Exercise 3-25
Marine Forces Reserve (MARFORRES)
June 17, 2025 | 2:58
U.S. Marines with Combat Logistics Battalion 23, Combat Logistics Regiment 4, 4th Marine Logistics Group (CLB-23) undergo three weeks of Mountain Training Exercise 3-25 at Marine Corps Mountain Warfare Training Center, Bridgeport, California, from May 28 to June 15, 2025. CLB-23’s mission during MTX was to increase proficiency in core mission essential tasks while operating in a mobility constrained environment due to these extreme conditions. (U.S. Marine Corps Video by Cpl. Aaron TorresLemus) By License - This video contains audio from a USMC enterprise licensed asset from Adobe Stock: "Dark Mountains - Cinematic Post Rock Ambient" by Most Requested Music / https://stock.adobe.com/ "BAR WENCH" by Life Span / https://stock.adobe.com/
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enlightenedTo find information about filing a claim related to exercise DEFENDER activities, visit Claims Information and select your country.