WWI Military Maps & Aerial Photography

Symbols Used on the Maps:

Please note that these map symbols have been derived from the maps in McMaster University Library's collection, many of which have been hand annotated. Symbols vary, especially on maps from the earlier part of the war. As the war progressed more and more symbols began to be standardized. For these reasons, the ones shown here in no way represent a complete or definitive list, but instead are provided as an aid in interpreting the maps in our collection.

CRATERS:	REGULAR
	FORTIFIED
	ORGANISED SHELL HOLES
PITS:	UNCOVERED
	COVERED
	WITH MACHINE GUN
DUMPS:	SUPPLY
	AMMUNITION
	UNKNOWN
	LARGE (AREA OUTLINED)
HEADQUARTERS:	CORPS
	DIVISION
	OTHER
ARMS:	MACHINE GUN
	TRENCH MORTAR
	ANTI - AIRCRAFT GUN
	TANK GUN
STRUCTURES:	CHURCH
	MILL
	SINGLE HUTS OR SHELTERS
	CONCRETE ENFORCED
	EARTHWORKS
	ENTANGLEMENT
	RED CROSS STATION
COMMUNICATIONS:	LAMP SIGNAL STATION
	TELEGRAPH CENTRE
	BURIED CABLE OR PIPE
AIRFIELDS:	BALLOON NORMAL POINT OF ASCENT
	BALLOON BED OR SHED
	AERODROME
	AIR LINE
POSTS:	LISTENING
	OBSERVATION
	SENTRY
ROADS:	1ST CLASS FENCED
	1ST CLASS UNFENCED
	2ND CLASS FENCED
	2ND CLASS UNFENCED
	3RD CLASS FENCED
	3RD CLASS UNFENCED
	FOOT PATH
	CART TRACK
BRIDGES:	FOOT
	TRAFFIC
	RAIL
RAILWAYS:	DOUBLE GAUGE
	SINGLE / NORMAL GAUGE
	LIGHT METRE GAUGE
	TRENCH TRAMWAY (TEMPORARY)
	PROPOSED
	DISUSED
WATER:	DITCH WITH WATER
	FLOODED AREAS
	DAM
	CAUSEWAY
OTHER:	AREA OF ACTIVITY