⁵⁴ Warren, still stationed in France, was probably looking for the whole of the Duc de Saint-Simon’s Mémoires. In later years he was to write six books on Louis XIV and the Grand Siècle. So memorable was his discovery of Saint-Simon that forty-five years later he told me he could still recall buying an abridgement of the Mémoires at St Omer on 3 March 1919.