Teleprinter

Particulars of trains are advised from Willesden Telegraph Office by teleprinter, supplemented as necessary by telephone from Euston Arrival Box.

No matter where they were billeted, the staff officers' reality was unchanging: a dozen telephone numbers, some signals corps pilots and motorcyclists, a signals officer, a teleprinter, a message despatch point, a radio and—laid out on the table—a map of the war, densely covered with blue and red pencil marks.