Official photograph issued by the Press Bureau "Great British Advance in the West, C.2266..."
Framed (ref: 6137)
Black and white photograph
Provenance: The Artist's Estate; Private collection
Field telephones were first used in the First World War to direct troops. The replaced flag signals and the telegraph as an efficient means of communication, but they depended on the laying of land lines. The first field telephones had a wind-up generator, used to power the telephone's ringer and batteries to send the call.