Marines with 1st Battalion, 7th Marine Regiment clear a building in a simulated combat town during the culminating event of Division School’s Urban Leaders Course aboard Marine Corps Base Camp Pendleton, California, April 22, 2015. The three-week course is designed to prepare Marines to lead in an urban environment. - Marines with 1st Battalion, 7th Marine Regiment clear a building in a simulated combat town during the culminating event of Division School’s Urban Leaders Course aboard Marine Corps Base Camp Pendleton, California, April 22, 2015. The three-week course is designed to prepare Marines to lead in an urban environment.