411 REFERENCE · Wikipedia
12-inch mortar
Reference material by Wikipedia contributors. This retains its source identity and is not 411 news reporting.
12-inch mortar may refer to:
12-inch coast defense mortar, a mortar used by the Coast Artillery Corps of the United States Army 1885–1945.
Mortier de 12 Gribeauval, a mortar used by the French Army from 1780 to the mid-19th century.