Sgt. Nicholas Fate, from 1st Brigade Combat Team, 4th Infantry Division, provides perimeter security while fellow Soldiers search for weapons caches in a field near Mushahda, Iraq. Photo by Petty Officer 1st Class Michael Larson. BAGHDAD -- The 4th Infantry Division, with more than 20,000 “Ironhorse” Soldiers, deployed to Iraq and took the mantle of responsibility for Multi-National Division - Baghdad from 3rd Infantry Division during a transfer of authority ceremony Jan. 7, 2006. The deployment marked the division’s second deployment to theater in three years. The unit became the first complete “heavy modular” division to deploy to combat...