signal flag alt 3rd

signal flag alt 2nd

signal flag alt 1st

signal flag uniform

signal flag xray

signal flag romeo

signal flag whiskey

signal flag charlie

signal flag tango

signal flag 0

signal flag 3

signal flag oscar

signal flag 4

Heliograph signalling 1910

signal flag mike

signal flag answering pennant

signal flag papa

signal flag 9

signal flag quebec

Blanket Signal

signal flag bravo

signal flag 8

signal flag foxtrot

smoke signals