MCRP 12-10B.1, page 109

Barrier material (barbed wire, sandbags) Munitions (especially grenades) Food and water Medical supplies Firefighting equipment. 3402. Defense Against Armor. Urbanized terrain is well suited to an infantry’s defense against mechanized infantry and armored forces. Armored forces will usually avoid built-up areas but may be forced to pass through them. a. Built-up areas have certain aspects that favor infantry antiarmor operations. (1) Buildings provide cover and concealment for defending infantry. (2) The streets restrict armor maneuver, fields of fire, and communications, thereby reducing the enemy’s ability to reinforce. (3) Rubble in the streets can be used to block enemy vehicles, conceal mines, and cover and conceal defending infantry. (4) Rooftops, alleys, and upper floors provide good positions for flanking and overhead fire. (5) Sewers, storm drains, and subways provide underground routes for infantry forces. b. To prepare for antiarmor operations, a platoon should: (1) Choose a Good Engagement Area. The best way for infantry Marines to engage tanks is one at a time so that they can destroy one tank without being vulnerable to the fires of another. Good engagement areas include narrow streets, turns in the road, “T” intersections, bridges, tunnels, split-level roads, and rubbled areas. Less obvious locations can also be created by using demolitions or mines to create obstacles. (2) Select Good Weapons Positions. The best weapons positions are places where the tank is weakest (tank deadspace) and the infantry is most protected. Forcing tanks to button up greatly reduces their ability to see and fire on close-in street and overhead targets. Figure 3-16 (on page 3-38) shows close-in tank weapon vision and engagement limitations (tank buttoned up) at street and overhead levels. Military Operations on Urbanized Terrain 3-37