Marines assault through an opening between two buildings Aug. 27 during military operations on urbanized terrain training at the Central Training Area on Okinawa, Japan. Complicating factors in urban warfare include the presence of civilians and the complexity of the terrain. MOUT is combat conducted in urban areas, such as cities or towns. The Marines are with 1st Battalion, 3rd Marine Regiment, currently assigned to 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force, under the unit deployment program. (U.S. Marine Corps photo by Pfc. Cedric R. Haller II/Released)