Baueda released some new 15mm terrain pieces over in their webstore.
From the release:
A generic ancient fortification based on the classic ditch/embankment and stockade model popularly thought as Roman, but effectively used from before Hellenistic times to well up into the middle ages, with only minor differences. Perfect for a Celtic hillfort, a Norman or Dark Age wooden castle or a fantasy stronghold entrance this set has been designed specifically for being compatible with FOG and DBA family of rules.
FOG2 is also available ready to play, assembled, based and painted at the same amazingly high standard you can see in the pictures: