Signal Corps training in semaphore in a field.
Signalmen Training - Semaphore.
Location of events unknown.
British Signal Corps train at semaphore drill. Group of signal men stand in field; each holding 2 flags; pointed down toward ground in front. All together; they move the flags into different positions in a code. Then; CU of a soldier with only one flag; moving it around really quickly; as another soldier marks in a notepad. Maybe giving him a test; or else trying to decode.
World War One; communications.