U.S. Army soldiers use smoke grenades for concealment. U.S. Army soldiers from the 1st Stryker Brigade Combat Team use smoke grenades for concealment as they engage anti-Iraqi forces in Buhriz, Iraq, on March 14, 2007. Soldiers from the 5th Battalion, 3rd Brigade, 2nd Infantry Division are conducting their first mission in the Diyala province. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 630687-I-EPI71-054.jpg Photo Gallery