JasperDog, You said you would be interested in any information I could find. I have been scouring the internet for things which might be of interest, and I came across these two diagrams of the positions of the lines around Bucquoy during the battle and after the German Offensive ground to a halt on 5 April 1918. The 1/9 DLI position in defence next to Rossignol Wood (together with the 2/5 Duke of Wellington) is shown at the bottom of the first diagram, which depicts the confused alignment of the front line as the battle progressed. The second diagram, pictured a few days later, shows how the front was then established. This may help if you ever decide to visit the battlefield. I went to the battlefield sites where I knew Billy had been (Butte de Warlencourt and Bouilly Ridge) last year - it's a pity I didn't know about Bucquoy at the time of the trip, but I am glad to know now, so thanks again. Perhaps I will have an opportunity for a visit on another occasion???