Carl,
Thanks for the comments
The Buildings, Terrain and Germans are based with some cheap snow flock from Antenocitis workshop. This looked good when first applied with PVA but after it had dried looked terrible. To achieve the effect on those pieces I applied a second coat of glue and flock over the first then when this had dried I drybrushed it brilliant white.
I would note that Antenocitis workshop no longer sell the cheap snow flock, but I suspect the same effect could be achieved with some fine sand.
To be honest I am tempted with having a go with the army painter snow flock as the effect on Dave's ( US Para) bases looks good.
Another Alternative is:-
http://missing-lynx.com/articles/other/create_s... Though I have not got this to work reliably in 10mm