The Last Shell ?

Who can help, as I could not get to the Valuation day at Banbury, I have a 75mm shell, from a British origin, which has a piece of paper on it that says "The Last Shell fired by V sect Area 3.00pm 9th. November 1918" Anyone have any ideas as to the Identity of Unit? Shell case made April 1918, By Fabrique National I also have a picture of some Royal Marine Artillery, taken at Becourt, on the Somme, 3rd.August 1916, the man on the extreme right of the picture , is the DOUBLE of ME, who is he? Editor's comment: SHELL: In 1915 Britain acquired a number of "autocanon de 75 mm mle 1913" anti-aircraft guns, as a stopgap measure while it developed its own anti-aircraft alternatives. They were used in the defence of Britain, usually mounted on de Dion motor lorries using the French mounting which the British referred to as the "Breech Trunnion". Britain also purchased a number of the standard 75 mm guns and adapted them for AA use using a Coventry Ordnance Works mounting, the "Centre Trunnion". At the Armistice there were 29 guns in service in Britain. The head stamps on the case should confirm which factory. "FN" on a French 75mm indicates that the case was made by the Fonderie Nationale de Nanterre. So the shell was (likely) made in Nantere and was probably fired from a British adapted mount in the AA role. PHOTO: There is no obvious way to identify a random WW1 British serviceman from a photo unless there are other clues from uniform, badges and captions. In this instance all that helps is the Royal Marine Artillery connection (His hat badge is that of the RMA). Worth trying RM museum at Portsmouth maybe - but an extremely long shot unless they happen to have another photo of the same man, or a captioned version of this one.