Thesaurus Term/Concept: PICKETT HAMILTON FORT

Identifier	123500
Class	DEFENCE OF BRITAIN
Status	Preferred
Index?	Yes
Scope Note	A sunken, circular, concrete pillbox used on airfields. They remained flush with the surface to permit the free movement of aircraft, but if attack threatened, could be raised, hydraulically or by a counterbalance, and manned to give covering fire.

Broader Terms/Concepts (2)