Recently I asked for suggestions for how to make my 6mm ruined towns look more rubble-strewn. Thank you for the ideas.
Today I mixed up a roll of Milliput modelling material for another domestic purpose before realising that it would not work. I now had a block of hardening putty with no apparent purpose.
My first idea was to make some entrenchments scaled to my 10cm hexagon edges. Then I remembered my previous problem. So I rolled the putty into small balls, crushed them flat, squashed the edges to 2cm (my gaming road width) and attacked them at random with a small cross-head screwdriver.
And here are the results, awaiting curing and painting:
Progress reports will follow.