Assertion: successful rapid fire firearm | /r/CapableOf | field by the union forces
Facets:
value: during the american civil war
type: TEMPORAL
value: in the 1860s
type: TEMPORAL
Source sentences:
text: The first successful rapid-fire firearm is the Gatling gun, invented by Richard Jordan Gatling and fielded by the Union forces during the American Civil War in the 1860s.