Thanks,
There will be a road bridge over the river behind the 2 timber bridges, hence the name.
The control points and junctions often had letters assigned, or codenames, although since the farm is going to be a control point we are taking the farm name to be the control point name.
The engineers would likely have used the british name for it though as you have said.
The trouble with vehicles is that next to none of the photos we have seen have a tank and the WDLR in them together, in fact I can't think of one.
I may be pushing it a bit by building a traction engine to tow a howitzer down the road at the back of the layout, ideally we need a horse drawn general service wagon or a suitable lorry, I also have a model T to turn into a staff car.
Cheers
Mike
(Best ask Rob to alter the thread title slightly....)