Sand Rampants : Will force tanks to expose vulnerable underside as they go over them
Barbed Wires : Will impede the escape of any tank crew forced to abandon their vehicle
Fences : Some electrified, erected on the approaches to the city. It will slow down infantry movement.
Tanks : Iraqi tanks and artillery dug into raised positions with fortified revetments
Minefields : The area around Baghdad is carpeted with anti-tank and anti-personnel mines
Smokescreen: Trenches filled with oil. When ignited, it will interfere with aircraft targeting Iraqi positions -- especially the USAF A-10 'Tankbuster' which needs a clear line of sight.