The Longest Little Railway in the World

I have been watching this series about trying build a model steam railway through the Great Glen and I wondered if Achnacarry would get a mention as the route passed beside Loch Lochy. In the 3rd episode they did just that. Not only did they show the usual black and white Commando training scenes with voice over describing the Commando training, but the grandfather of one of the young ladies helping with the build was a Commando.