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

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Video by Spc. Kyle Kimble
U.S. Soldiers Conduct Vehicle Maintenance During Balkan Sentinel
5th Mobile Public Affairs Detachment
June 4, 2025 | 0:41
The U.S. Soldiers of 4th Battalion, 6th Infantry Regiment, 3rd Armored Brigade Combat Team, 1st Armored Division, conduct vehicle maintenance at the Unit Maintenance Collection Point during exercise Balkan Sentinel at Koren Training Area, Bulgaria, June 3, 2025. The Bulgarian national exercise, Balkan Sentinel, will be linked to Immediate Response 25 and consists of a battalion from the U.S. Army's 3rd Brigade Combat Team, 1st Armored Division, one Forward Land Forces (FLF) multinational battlegroup and the Bulgarian Land Force Command conducting a battalion-level live-fire exercise at Novo Selo TA and Koren TA. The FLF is one of eight battlegroups contributing to NATO’s forward presence and is hosted by Bulgaria, with Italy being the framework nation. (U.S. Army video by Spc. Kyle Kimble)

["Dream Of Genie" by Jose Sola Sanchez and Justin Williams and Robert Ronci is licensed under De Wolfe Music Library. To request a copy of the 5th Mobile Public Affairs Detachment’s music license please email team@dewolfemusic.com]
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enlightenedTo find information about filing a claim related to exercise DEFENDER activities, visit Claims Information and select your country.