Howitzer Fire U.S. soldiers and Iraqi forces fire a howitzer at Islamic State of Iraq and Syria positions near the Iraqi-Syrian border during Operation Roundup, June 5, 2018. The soldiers are assigned to the 3rd Cavalry Regiment. Army photo by Spc. Anthony Zendejas IV SHARE IMAGE: Download Image: Full Size (1.79 MB) Tags: Iraq, Syria, Operation Roundup Photo By: Spc. Anthony Zendejas IV VIRIN: 180605-A-TC961-0108.JPG Photo Gallery