Assertion: permanent fortification | /r/HasProperty | constructed of durable materials
Facets:
value: in time of peace
type: TEMPORAL
Source sentences:
text: Permanent fortification is intended for the defense of towns, frontiers, and seaports, and is constructed of durable materials in time of peace; while field fortification being raised only for the temporary purpose of protecting troops in the field, its materials are those afforded by local circumstances and a limited time.