Abrams Battle Position U.S. soldiers position an M1A2 Abrams tank into a newly built hull-down battle position during Exercise Peace Sentinel at Novo Selo Training Center, Bulgaria, Nov. 23, 2015. U.S. Army photo by Staff Sgt. Steven M. Colvin SHARE IMAGE: Download Image: Full Size (2.02 MB) Tags: Peace Sentinel, operation atlantic resolve, Photo Essays, Bulgaria , M1A2 Abrams, novo selo, Soldiers, U.S. Army, All images, NATO Photo By: Army Staff Sgt. Steven Colvin VIRIN: 151123-A-HO673-954.JPG Photo Gallery