Assertion: grenade | /r/ObjectUse | used by major belligerent
Facets:
value: since world war one
type: TEMPORAL
value: since trench warfare
type: TEMPORAL
value: in the first world war
type: TEMPORAL
Source sentences:
text: Used by every major belligerent in the First World War, grenades were initially seen as a solution to the stalemate of trench warfare and since grenade employment focused on trench clearing, early organization and employment techniques were similar for both sides.
text: Since World War One and trench warfare, grenades have now been used in most major conflicts.