Columbia subject headings:
Harvard subject headings:
Batteries (Ordnance)--Italy--Messina, Strait of, Region--History.
Fortification--Italy--Messina, Strait of, Region--History.
Italy--Defenses--History.
Messina, Strait of, Region (Italy)--Antiquities.
Messina, Strait of, Region (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture and war--Italy--Messina, Strait of.
Facsimiles.
Messina, Strait of (Italy)--History.
Military archaeology--Italy--Messina, Strait of.
Military architecture--Italy--Messina, Strait of.