In between bits of being badly, I've popped into the model room and done a few minutes of work when the energy has been sufficient. Work on the bunker is almost complete. I wanted to give it a "gritty" concrete texture so coloured some diluted PVA glue with grey paint, gave it a light coat and sprinkled some very fine sand over it. Once dry, I thought it looked like a blasted sandcastle on the beach - not impressed. So after a few washes of grey paint, then a subtle stippling of greens and brown to try to represent the lichen growth and a brisk rub with sandpaper I think I got the texture I'm after. Just got a few bits of damage to finish and take some pictures to see how it actually looks, then adjust the colours if necessary, but I aim to have that done tonight. Pictures to follow.
As the bunker is built into the hillside as part of some bigger underground defence line, the top of the bunker is accessible from the top of the slope so on the roof will be a mortar - perhaps on it's side - abandoned by the team as they see the flame thrower tank approaching up the hill. The bunker is only an MG post so the tank will be pretty much going head on at it, having slewed off the road and through a barbed wire fence.