The 22nd Battalion never really recovered from the heavy losses it sustained and was disbanded on 5th February 1918. The Mayor of Kensington wrote to Field Marshal Douglas Haig on 6th February pleading for the Battalion to be kept together but it was too late.
Six weeks after the Kensingtons were disbanded, Barker was killed during the Second Battle of the Somme on 24th March 1918. The entry in the Brigade HQ diary reads simply, ‘Shells began to fall in and around Guendecourt at 5.45pm. Brigadier General R. Barnett Barker, DSO and Captain E. I. Bell, MC (staff Captain) were killed by a shell.’ It would be another eight months before the end of the First World War.
The 22nd Royal Fusiliers Old Comrades’ Association were still visiting Lietenant Colonel Barker’s grave in France as late as 1930.