15 cm Kanone M 80 gun
15 cm Kanone M 80 gun is a rifled breech loader or siege artillery.
Overview
Austro-Hungarian siege artillery.
In detail
It is associated with Austria–Hungary.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“15 cm Kanone M 80”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q4550899: 15 cm Kanone M 80 gun
Consult the source