Bremer wall

The term "T-wall" has been used commonly, due to the wall's cross-sectional shape resembling an inverted letter "T".

Often made of a special type of concrete that is designed to withstand the impact of explosions and reinforced with steel bars and is significantly thicker and heavier than traditional concrete, they are primarily used to provide protection against improvised explosive devices (IEDs), rocket attacks, and other forms of indirect fire.

[1] Much like Concertainer, T-wall barriers were commonly used as perimeter fortifications of forward operating bases during the War on terror.

In Baghdad's Sadr City district, for example, over 30 miles of twelve-foot-tall concrete T-wall barriers were employed to create what were dubbed "safe communities.

Many deployed military units painted nearby T-walls with their insignia, colors, mottos and, mascots.