National Guard United States USAREUR U.S. Army Lithuania Poland exercise NATO Hungary Latvia Romania 3rd Infantry Division Estonia Bulgaria U.S. European Command allies EUCOM Novo Selo Training Area North Atlantic Treaty Organization Operation Atlantic Resolve OAR Atlantic Resolve U.S. Army Europe howitzer Adazi GTA Grafenwoehr Training Area soldiers U.S. Smardan Troopers 3ID Fort Stewart paladin NSTA Tank Novo Selo Abrams M1A1 7th Cavalry Regiment Bradley European Activity Set regionally allocated force 1st Armored Brigade Combat Team Armor Brigade Combat Team Armored Brigade Combat Team 1st Brigade Combat Team ABCT 1ABCT 3d Infantry Division 2-7 IN 1-64 AR 3-69 AR 5-7 CAV 1-41 FA 10BEB 10th EN 3BSB BSB Army photo Army photographer Army photojournalism Army picture military photograph military photography military photojournalism military picture Army Reserves M1 M2A3 Bradley Infantry Fighting Vehicle BFV EAS RAF DPTA Drawsko Pomorski Zagan Training Area Tapa Pabrade Rukla Camp Unamajor Cincu MK capacity