Way back in the 1980s I read an article about camouflage. In that article was a reference to the German army issuing a “brick and mortar” camouflage for urban combat. (Not the April Fool pattern above!) More information could not be found, and it was several years before I came across a single illustration.
Locating this image on line proved even harder!
Here is the illustration, taken from Funcken's “Arms and Uniforms. Second World War Part 2”. My recollection was of a red pattern with grey/cream swirls. My recollection is inaccurate, but it can be seen how the creases and wear lines on the illustration would create this impression.
This is actually the same pattern as shown in “Waffen-SS” by D.S. V. Fosten and R. J. Marrion.
In addition to this pattern the German army and SS issued a number of autumn patterns that used reds and oranges. These were intended for environments such as woodland leaf litter but might have also proved useful in some urban environments. Below is a German garment captured and used by the urban fighters of the Warsaw uprising.
Another German pattern that might be useful in brick environments:
Future conflicts are very likely to take place in urban environments, yet most military gear is still being designed for verdant, rural environments. In some urban environments desert or semi-arid camouflages are useful. Other environments may need more red/orange dominant patterns. Correctly designed these patterns may also serve in some rural environments too. Smocks are the logical way to provide troops with the correct camouflage for the fight.
A friend of mine found this, originally a British army DPM item, it has been painted.