Sorry I’ve been so long in replying, but I’ve now, at last, had a chance to digest all the information that has recently been posted.
My summary (speculation) on the events of the day is that Thomas’s and 2/Lieut. Pallett’s recce took them as far as D76 (Rue du Maquis de Mazinghein as now named) which is a sunken road and seems to fit with his description of “found ourselves in the front line - a sunken road passing through the village of Vaux-Andigny”. If I’m reading the US map you posted correctly (see post #50) Vaux-Andigny was just inside allied lines as of 11th October, which seems to make this plausible.
According to the KRRC Chronicle the battalion assembled in the Bois de Busigny, which is the large wood that can be seen on Google Maps to the west of Vaux-Andigny. This is the wood, I think, that Thomas refers too. He then mentions marching along a straight road towards Vaux-Andigny along which they were heavily shelled. This can’t be road the road labelled as Bois de Busigny Nord on Google Maps as, while it is very straight, it doesn’t lead to Vaux-Andigny and it goes into the American area. I reckon it is most likely to be the road on the southern edge of the wood marked as “Rue de Flaquet” on Google maps, though this is only straight for a couple of hundred metres. Interestingly the Bois de Busigny seems to be in the American area according to the US map. I guess this road would have been a fairly straightforward target for the German artillery on Bellevue Spur.
When Thomas went back to recover the officer-less platoon, it seems he makes a wrong turn leaving Vaux-Andigny and takes the D76 (Rue du Maquis de Mazinghein) towards Molain, rather than the road nowadays called Rue Charles Diry which would presumably had led him closer to where the rest of his battalion were.
Thomas writes about going up the main street of Molain to the centre. Presumably he is towards the eastern of the village before he is surprised by the machine guns. I had always assumed these machine gun to be in the village itself, but I suspect they were just outside to the east. One of the things that doesn’t make sense to me is how his platoon are pinned down in houses either side of the street, but he is able to talk to Americans who are passing and to two soldiers escorting prisoners.
My take on that the large tank that eventually helps them out is an American Mark V – it seems to make more sense that a Whippet or one of the British Mark Vs because of the location. I think the Whippets referred to in the Chronicle are to do with a different incident - this seems likes an incident that didn't make the official record.
After over-coming the machine guns they eventually end up with the rest of the Battalion to the east of Molain, and north of La Vallée Mulâtre. Thomas must still be very close to the Americans as he writes about seeing them advancing across a ridge about 1000 yards away.
With reference to the sunken road to the Battalions left rear referred to in the KRRC Chronicle is it the short section of road here on Google maps: 50.034113,3.560661 (+50° 2' 2.95", +3° 33' 38.44") ? [I've used the Lat/Long reference as when I tried to link to it, the link keeps going to the wrong place].
I’d welcome you views on this narrative – does it hold water?