Assertion: mortar's shell | /r/HasProperty | the ammunition of choice
Facets:
value: usually
type: DEGREE
Source sentences:
text: The deck-piercing shells were usually the ammunition of choice, because even the heaviest battleships of the 1890-1920 period were relatively lightly armored on the tops of their main decks, so a plunging half-ton shell could inflict crippling damage on one of them.[note 4] Early on (from about 1890 to 1915), coast defense mortars were also supplied with so-called "torpedo shells" weighing 800 or 1,000 pounds (360 or 450 kg) (see illustration at right, below).