I enclose an image of the item. Does anyone happen to know which tank battalion(s) and infantry regiments it represents? It is supposedly a depiction of events on Sep 29th, 1918. Both British- and U.S.-crewed tanks took part, but Longstaff was Australian born, moved to England, and enlisted with the AIF in 1915. That leads me to suspect that he might have chosen an Oz outfit to feature in his painting. I haven't been able to dig anything up so far.
(BTW, condolences to our Australian friends on the loss of R. Benaud. He gave me 20 mins of his valuable time during a wash-out at Old Trafford, and could not have been more charming, helpful, informative, amusing, and kind.)
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.
