As far as possible for all locations in France, places named by Arthur Linfoot in his diary entries have been identified on present-day maps as described below, though not all with complete certainty; many French place-names are used for more than one location, sometimes with supplementary hyphenated names (eg. Longpré-les-Corps-Saints), sometimes not.
Brief directions for finding places named are given in footnotes, with map-square references (eg. “D7”) to the Michelin 1:200,000 map 511 “Nord-Pas-de-Calais, Picardie”, undated but current in 2012/3; and for a few weeks from late May to early July 1918, to the corresponding Michelin map 515 “Champagne-Ardenne.” These Michelin maps include a gazetteer. Road numbers (confusingly, also letter-plus-number, eg. “D3”), when quoted, are sourced directly from these maps although they are invariably confirmed by online sources; see below.
In northern France and in Belgium some WW1 spellings differ from the Flemish versions now in use.