These trenches are made of raw clay and PVA glue, all mixed by hand. When dry, the paste becomes very hard. The sand bags are repair putty. The trench supports are plywood. Everything is glued to a piece of hardboard.
Company trench with Mortar emplacement.
Company trench with Light Artillery emplacement.
Heavy weapons/infantry company emplacement.
Frontline Wargaming trench and log emplacement.
This other Heavy weapons/infantry company emplacement has an extra rear emplacement for artillery.
Another type of Company trench with rear support point.
Another Log Bunker by Frontline Wargaming.
Resin (DRW) Russian Bunker in 1/87th scale.