Ada Le Poidevin worked for the Salvation Army War Graves Visitation Service from 1919 to 1923. Her notebook for 1919 contains a list of R.G.L.I. names, all of whom died on 1st December 1917 and are buried at Point du Jour. Some are incomplete, as if the names on the wooden crosses, which would then have marked the graves, were unclear, but they include "1515 DMA, R.G.L.I." The Commonwealth War Graves Commission website also confirms that Bertie is buried at Point du Jour. Thus reports about the prisoner of war camp and his being buried at Seranvillers appear to have been inaccurate.

Three months after the news about Bertie filtered through, the Weekly Press of 6th July 1918, reported that Mr N. de la Mare of Rocquaine Place, St Peter's had received official news from the War Office that his third son, Pte Walter de la Mare, R.G.L.I. had been killed in action along with his brother on or about December 1st. Pte de la Mare was said to be the adopted son of Mr G. H. Williams, Les Sages, Torteval (which is very close to Les Cambrées), for whom he worked as a farm-hand. Walter is said to have been buried near Masnières although his name appears on the Cambrai Memorial at Louverval, which commemorates more than 7,000 men who died in the Battle of Cambrai and whose graves are not known.

Thus less than two months after they left the island, these two young brothers who joined up together had died together, though their families were left uncertain of their fate for several more months. Even then there was a degree of confusion about what had actually happened to them. Magnify this by the number of losses across the island, and the devastating effect that the Great War had on ordinary Guernsey families can begin to be seen. This is why we must never forget.