Marines with 1st Platoon, Company C, 1st Battalion, 4th Marine Regiment, conduct urban operations training at the Infantry Immersion Trainer aboard Marine Corps Base Camp Pendleton, Calif., Oct. 24, 2014. The IIT assists Marines in sharpening their basic combat skills by creating a realistic combat environment. Civilian role players occupy the training town, acting as either innocent bystanders, allied armed forces, law enforcement personnel or enemy insurgents, most of whom don’t speak English when in character. - Marines with 1st Platoon, Company C, 1st Battalion, 4th Marine Regiment, conduct urban operations training at the Infantry Immersion Trainer aboard Marine Corps Base Camp Pendleton, Calif., Oct. 24, 2014. The IIT assists Marines in sharpening their basic combat skills by creating a realistic combat environment. Civilian role players occupy the training town, acting as either innocent bystanders, allied armed forces, law enforcement personnel or enemy insurgents, most of whom don’t speak English when in character.