The Marine Corps Warfighting Laboratory executed Project Metropolis II ,a Dense Urban Operations limited operational experiment 2019 (DUO19) at Muscatatuck Urban Training Center (MUTC), Indiana. The event aimed to effectively combine robotics, sensors, manned/unmanned vehicles, and dismounted Marines with a focus on improving Marines' ability to sense and locate the threat, observing their speed of decision making and speed of action, and determining their lethality when employing traditional and surrogate equipment versus an enemy force in a dense urban environment. This experiment took Marines assigned to 3rd Battalion, 8th Marine Regiment, a squad-sized element from 1st Battalion, 6th Marine Regiment, and British Royal Marines assigned to 8 Troop Charlie Company, 40 Commando Royal Marines. The U.S. Marines and Royal Marine Commandos were divided into 'red' force and 'blue' force and engaged each other in a live force-on-force, free-play battle within a dense urban setting.