After much consideration I did in the end get a German Armoured Train for Flames of War. Though they were not used on the Western Front (as far as I am aware) it is my intention to use it against British (and American) tanks. Then again I might just get in a few Soviet tanks for a quick game.
As with most Battlefront models the kit contains resin with metal parts for the details. The engine and tender are two resin parts with the front, the funnel and the wheels in metal.