MARINE CORPS AIR GROUND COMBAT CENTER TWENTYNINE PALMS, Calif. -- The battlefield for those units deploying to Iraq is often found within the perimeters of cities and villages. It is an environment that can be constrictive and fought under tight perimeters. The enemy in Iraq has the advantage of surprise, concealment, and civilian presence. The ability for Marines to make immediate decisions, and for unit leaders to successfully lead their subordinates is vital to defeat an enemy in urban terrain.From Dec. 6 to Dec. 8, 1st Tank Battalion joined forces with Lima Company, 3rd Battalion, 3rd Marine Regiment, for a live-fire military operations in urban terrain training exercise at Combat Center Range 210.The training was in an effort to expose the Marines of both the tank battalion and infantry battalion to a live-firing urban operation, said Lt. Col. Aaron T. Slaughter, battalion commander, 1st Tank Battalion. “It is critical that the Marines are exposed to reacting to enemy fire and various suicide bombs in confined areas,” said Slaughter. “The ability to engage threats and stop conflicting fires, to effectively pursue the enemy, and clear buildings is essential for success and survivability in an urban environment.”As their training cycle completed, the Marines established a harbinger of the damage they will cause on enemy forces in Iraq.